diff --git a/apps/payment/models.py b/apps/payment/models.py
index 81acf8e7..c200dc26 100644
--- a/apps/payment/models.py
+++ b/apps/payment/models.py
@@ -1,5 +1,7 @@
 from decimal import Decimal
 import arrow
+from django.db.models import Func, F
+
 from paymentwall import Pingback
 from polymorphic.models import PolymorphicModel
 from polymorphic.managers import PolymorphicManager
@@ -11,7 +13,7 @@ from django.core.validators import RegexValidator
 from django.utils.timezone import now
 from django.conf import settings
 
-from project.utils import weekday_in_date_range
+from project.utils import weekdays_in_date_range
 
 from apps.course.models import Course
 from apps.config.models import Config
@@ -110,17 +112,14 @@ class Payment(PolymorphicModel):
         ordering = ('created_at',)
 
     @classmethod
-    def calc_amount(cls, payment=None, user=None, course=None, weekdays=None,
-                    add_days=False, date_start=None, date_end=None):
+    def calc_amount(cls, payment=None, user=None, course=None, weekdays=None):
         if isinstance(payment, CoursePayment):
             course = payment.course
             user = payment.user
         if isinstance(payment, SchoolPayment):
             user = payment.user
             weekdays = payment.weekdays
-            add_days = payment.add_days
-            date_start = payment.date_start
-            date_end = payment.date_end
+        price = 0
         referral_bonus = 0
         referrer_bonus = 0
         if hasattr(user, 'referral') and not user.referral.payment:
@@ -130,29 +129,40 @@ class Payment(PolymorphicModel):
         if course:
             price = course.price
         else:
-            aggregate = SchoolSchedule.objects.filter(
-                weekday__in=weekdays,
-            ).aggregate(
-                models.Sum('month_price'),
-            )
-            if add_days:
-                _school_payment = SchoolPayment.objects.filter(
+            if user:
+                school_payments = SchoolPayment.objects.filter(
+                    user=user,
+                    date_start__lte=now().date(),
+                    date_end__gte=now().date(),
                     add_days=False,
-                    date_start__lte=date_start,
-                    date_end__gte=date_end,
                     status__in=[
                         Pingback.PINGBACK_TYPE_REGULAR,
                         Pingback.PINGBACK_TYPE_GOODWILL,
                         Pingback.PINGBACK_TYPE_RISK_REVIEWED_ACCEPTED,
                     ],
-                ).last()
-                weekday_count = weekday_in_date_range(date_start, date_end, weekdays[0])
-                all_weekday_count = weekday_in_date_range(_school_payment.date_start, _school_payment.date_end,
-                                                          weekdays[0])
-                price = Decimal(aggregate.get('month_price__sum', 0) * weekday_count // all_weekday_count)
+                )
+                school_schedules_purchased = school_payments.annotate(
+                    joined_weekdays=Func(F('weekdays'), function='unnest', )
+                ).values_list('joined_weekdays', flat=True).distinct()
+                weekdays = set(map(int, weekdays)) - set(school_schedules_purchased)
+                prev_school_payment = school_payments.last()
+                add_days = bool(prev_school_payment)
             else:
-                price = Decimal(aggregate.get('month_price__sum', 0))
-            if price >= config.SERVICE_DISCOUNT_MIN_AMOUNT:
+                add_days = False
+            school_schedules = SchoolSchedule.objects.filter(
+                weekday__in=weekdays,
+            )
+            if add_days:
+                weekdays_count = weekdays_in_date_range(now().date(), prev_school_payment.date_end)
+                all_weekdays_count = weekdays_in_date_range(prev_school_payment.date_start, prev_school_payment.date_end)
+                for ss in school_schedules:
+                    price += ss.month_price // all_weekdays_count.get(ss.weekday, 0) * weekdays_count.get(
+                        ss.weekday, 0)
+            else:
+                price = school_schedules.aggregate(
+                    models.Sum('month_price'),
+                ).get('month_price__sum', 0)
+            if not (payment and payment.id) and price >= config.SERVICE_DISCOUNT_MIN_AMOUNT:
                 discount = config.SERVICE_DISCOUNT
         amount = price - discount
         referral_bonus = round(amount * referral_bonus / 100)
@@ -218,6 +228,7 @@ class CoursePayment(Payment):
         verbose_name_plural = 'Платежи за курсы'
 
 
+
 class SchoolPayment(Payment):
     weekdays = ArrayField(models.IntegerField(), size=7, verbose_name='Дни недели')
     add_days = models.BooleanField('Докупленные дни', default=False)
diff --git a/apps/payment/views.py b/apps/payment/views.py
index 8b1c2544..04e72f5d 100644
--- a/apps/payment/views.py
+++ b/apps/payment/views.py
@@ -99,7 +99,6 @@ class SchoolBuyView(TemplateView):
         host = str(host[0]) + '://' + str(host[1])
         weekdays = set(request.GET.getlist('weekdays', []))
         use_bonuses = request.GET.get('use_bonuses')
-        add_days = 'add_days' in request.GET
         roistat_visit = request.COOKIES.get('roistat_visit', None)
         if not weekdays:
             messages.error(request, 'Выберите несколько дней недели.')
@@ -109,21 +108,24 @@ class SchoolBuyView(TemplateView):
         except ValueError:
             messages.error(request, 'Ошибка выбора дней недели.')
             return redirect('school:school')
-        if add_days:
-            _school_payment = SchoolPayment.objects.filter(
-                user=request.user,
-                date_start__lte=now().date(),
-                date_end__gte=now().date(),
-                add_days=False,
-            ).first()
-            if not _school_payment:
-                add_days = False
+        prev_school_payment = SchoolPayment.objects.filter(
+            user=request.user,
+            date_start__lte=now().date(),
+            date_end__gte=now().date(),
+            add_days=False,
+            status__in=[
+                Pingback.PINGBACK_TYPE_REGULAR,
+                Pingback.PINGBACK_TYPE_GOODWILL,
+                Pingback.PINGBACK_TYPE_RISK_REVIEWED_ACCEPTED,
+            ],
+        ).first()  # ??? first?
+        add_days = bool(prev_school_payment)
         if add_days:
             school_payment = SchoolPayment.objects.create(
                 user=request.user,
                 weekdays=weekdays,
                 date_start=now().date(),
-                date_end=_school_payment.date_end,
+                date_end=prev_school_payment.date_end,
                 add_days=True,
                 roistat_visit=roistat_visit,
             )
@@ -161,12 +163,13 @@ class SchoolBuyView(TemplateView):
 @method_decorator(csrf_exempt, name='dispatch')
 class PaymentwallCallbackView(View):
 
-    def add_months(self, sourcedate, months):
-        month = sourcedate.month - 1 + months
-        year = sourcedate.year + month // 12
-        month = month % 12 + 1
-        day = min(sourcedate.day, calendar.monthrange(year, month)[1])
-        return datetime.date(year, month, day)
+    def add_months(self, sourcedate, months=1):
+        result = arrow.get(sourcedate, settings.TIME_ZONE).shift(months=months)
+        if months == 1:
+            if (sourcedate.month == 2 and sourcedate.day >= 28) or (sourcedate.day == 31 and result.day <= 30)\
+                or (sourcedate.month == 1 and sourcedate.day >= 29 and result.day == 28):
+                result = result.replace(day=1, month=result.month + 1)
+        return result
 
     def get_request_ip(self):
         x_forwarded_for = self.request.META.get('HTTP_X_FORWARDED_FOR')
@@ -179,7 +182,6 @@ class PaymentwallCallbackView(View):
     def get(self, request, *args, **kwargs):
         payment_raw_data = request.GET.copy()
         pingback = Pingback(payment_raw_data, self.get_request_ip())
-        september2018 = datetime.date(2018, 9, 1)
 
         if pingback.validate():
             product_type_name, payment_id = pingback.get_product().get_id().split('_')
@@ -232,12 +234,10 @@ class PaymentwallCallbackView(View):
                             date_end = school_payment.date_end
                         else:
                             date_start = arrow.get(school_payment.date_end, settings.TIME_ZONE).shift(days=1).datetime
-                            date_end = arrow.get(date_start, settings.TIME_ZONE).shift(months=1).datetime
+                            date_end = self.add_months(date_start)
                     else:
                         date_start = now().date()
-                        if date_start < september2018:
-                            date_start = september2018
-                        date_end = arrow.get(date_start, settings.TIME_ZONE).shift(months=1, minutes=-1).datetime
+                        date_end = self.add_months(date_start)
                     payment.date_start = date_start
                     payment.date_end = date_end
             if product_type_name == 'course':
diff --git a/apps/school/templates/blocks/day_pay_btn.html b/apps/school/templates/blocks/day_pay_btn.html
index 9f90c17d..ec00046f 100644
--- a/apps/school/templates/blocks/day_pay_btn.html
+++ b/apps/school/templates/blocks/day_pay_btn.html
@@ -2,5 +2,4 @@
   data-popup=".js-popup-buy"
   class="timing__btn btn"
   data-day="{{ school_schedule.weekday }}"
-  href="{% url 'school-checkout' %}?weekdays={{ school_schedule.weekday }}&add_days=true"
 >купить</a>
diff --git a/apps/school/templates/blocks/schedule_item.html b/apps/school/templates/blocks/schedule_item.html
index 63dde442..7e860a4e 100644
--- a/apps/school/templates/blocks/schedule_item.html
+++ b/apps/school/templates/blocks/schedule_item.html
@@ -4,9 +4,12 @@
     <div class="timing__info">
       <div class="timing__day{% if school_schedule.is_online %} active{% endif %}">
         {{ school_schedule }}
+        {% if request.user_agent.is_mobile and school_schedule.trial_lesson %}
+        <a class="timing__trial-lesson js-video-modal" href="#" data-video-url="{{ school_schedule.trial_lesson }}">Пробный урок</a>
+        {% endif %}
       </div>
       {% if is_purchased and live_lesson %}
-      <div class="timing__date">{{ live_lesson.date|date:"j E" }}</div>
+      <div class="timing__date">{% if request.user_agent.is_mobile %}{{ live_lesson.date|date:"j b" }}{% else %}{{ live_lesson.date|date:"j E" }}{% endif %}</div>
       {% endif %}
       <div class="timing__time">{{ school_schedule.start_at }} (МСК)</div>
       <div class="timing__buy">
@@ -17,7 +20,7 @@
         {% else %}
           {% include './day_pay_btn.html' %}
         {% endif %}
-        {% if school_schedule.trial_lesson %}
+        {% if not request.user_agent.is_mobile and school_schedule.trial_lesson %}
         <a class="timing__trial-lesson js-video-modal" href="#" data-video-url="{{ school_schedule.trial_lesson }}">Пробный урок</a>
         {% endif %}
       </div>
diff --git a/apps/school/templates/summer/day_pay_btn.html b/apps/school/templates/summer/day_pay_btn.html
index 155b8827..f44bee84 100644
--- a/apps/school/templates/summer/day_pay_btn.html
+++ b/apps/school/templates/summer/day_pay_btn.html
@@ -3,5 +3,5 @@
   data-popup=".js-popup-auth"
   {% endif %}
   class="timing__btn btn"
-  href="{% url 'school-checkout' %}?weekdays={{ school_schedule.weekday }}&add_days=true"
+  href="{% url 'school-checkout' %}?weekdays={{ school_schedule.weekday }}"
 >купить</a>
diff --git a/apps/school/views.py b/apps/school/views.py
index e09801c2..3816c0eb 100644
--- a/apps/school/views.py
+++ b/apps/school/views.py
@@ -167,27 +167,11 @@ class SchoolView(TemplateView):
             )
             school_payment_exists = school_payment.exists()
 
-            school_payment_future = SchoolPayment.objects.filter(
-                user=self.request.user,
-                status__in=[
-                    Pingback.PINGBACK_TYPE_REGULAR,
-                    Pingback.PINGBACK_TYPE_GOODWILL,
-                    Pingback.PINGBACK_TYPE_RISK_REVIEWED_ACCEPTED,
-                ],
-                date_start__gte=date_now,
-                date_end__gte=date_now
-            )
-
-            school_payment_exists_future = school_payment_future.exists()
-            school_purchased_future = school_payment_future.last()
-
             school_schedules_purchased = school_payment.annotate(
                 joined_weekdays=Func(F('weekdays'), function='unnest',)
             ).values_list('joined_weekdays', flat=True).distinct()
         else:
             school_payment_exists = False
-            school_payment_exists_future = False
-            school_purchased_future = False
             school_schedules_purchased = []
         if all_schedules_purchased and is_previous:
             live_lessons = LiveLesson.objects.filter(
@@ -208,11 +192,11 @@ class SchoolView(TemplateView):
             'is_previous': is_previous,
             'course_items': Course.objects.filter(status=Course.PUBLISHED)[:6],
             'is_purchased': school_payment_exists,
-            'is_purchased_future': school_payment_exists_future,
+            'is_purchased_future': False,
             'min_school_price': SchoolSchedule.objects.aggregate(Min('month_price'))['month_price__min'],
             'school_schedules': school_schedules,
             'school_schedules_purchased': school_schedules_purchased,
-            'school_purchased_future': school_purchased_future,
+            'school_purchased_future': False,
             'subscription_ends': school_payment.filter(add_days=False).first().date_end if school_payment_exists else None,
         })
         return context
diff --git a/apps/user/views.py b/apps/user/views.py
index ee027821..9d3361a3 100644
--- a/apps/user/views.py
+++ b/apps/user/views.py
@@ -96,14 +96,8 @@ class ProfileView(TemplateView):
         ).all()
         context['all_school_schedules'] = SchoolSchedule.objects.all()
 
-        school_payment_future = SchoolPayment.objects.filter(
-            user=self.object,
-            date_start__gte=now(),
-            date_end__gte=now()
-        )
-
-        context['is_purchased_future'] = school_payment_future.exists()
-        context['school_purchased_future'] = school_payment_future.last()
+        context['is_purchased_future'] = False
+        context['school_purchased_future'] = False
 
         return context
 
diff --git a/project/templates/blocks/messages.html b/project/templates/blocks/messages.html
index 2f63fd3d..9702c39d 100644
--- a/project/templates/blocks/messages.html
+++ b/project/templates/blocks/messages.html
@@ -1,5 +1,5 @@
 {% if messages %}
-<div class="section section_gray section_menu">
+<div class="section section_gray section_menu" style="margin-bottom: 20px;">
   <div class="section__center center center_xs">
     {% for message in messages %}
     <div class="message message_{{ message.tags }}">{{ message }}</div>
diff --git a/project/templates/blocks/popup_buy.html b/project/templates/blocks/popup_buy.html
index cf21ff64..d9f59b77 100644
--- a/project/templates/blocks/popup_buy.html
+++ b/project/templates/blocks/popup_buy.html
@@ -29,7 +29,10 @@
                   data-day="{{school_schedule.weekday}}"
                   data-price="{{school_schedule.month_price}}"
                   autocomplete="off"
-                  {% if school_schedule.weekday in school_schedules_purchased or not is_purchased %}
+                  {% if school_schedule.weekday in school_schedules_purchased %}
+                  disabled
+                  {% endif %}
+                  {% if not is_purchased %}
                   checked
                   {% endif %}>
                 <span class="switch__content">
@@ -38,8 +41,12 @@
                   <span class="switch__cell"></span>
                   <span class="switch__cell">{{ school_schedule.title }}</span>
                   <span class="buy__trial-lesson switch__cell">
-                    {% if school_schedule.trial_lesson %}
-                    <a class="js-video-modal" data-video-url="{{ school_schedule.trial_lesson }}" href="#">Пробный урок</a>
+                    {% if school_schedule.weekday in school_schedules_purchased %}
+                      Куплено
+                    {% else %}
+                      {% if school_schedule.trial_lesson %}
+                      <a class="js-video-modal" data-video-url="{{ school_schedule.trial_lesson }}" href="">Пробный урок</a>
+                      {% endif %}
                     {% endif %}
                   </span>
                   <span class="switch__cell">{{school_schedule.month_price}}р в мес.</span>
@@ -55,7 +62,10 @@
                   data-day="{{school_schedule.weekday}}"
                   data-price="{{school_schedule.month_price}}"
                   autocomplete="off"
-                  {% if school_schedule.weekday in school_schedules_purchased or not is_purchased %}
+                  {% if school_schedule.weekday in school_schedules_purchased %}
+                  disabled
+                  {% endif %}
+                  {% if not is_purchased %}
                   checked
                   {% endif %}>
                 <span class="switch__content">
@@ -64,8 +74,12 @@
                   <span class="switch__cell"></span>
                   <span class="switch__cell">{{ school_schedule.title }}</span>
                   <span class="buy__trial-lesson switch__cell">
-                    {% if school_schedule.trial_lesson %}
-                    <a class="js-video-modal" data-video-url="{{ school_schedule.trial_lesson }}" href="">Пробный урок</a>
+                    {% if school_schedule.weekday in school_schedules_purchased %}
+                      Куплено
+                    {% else %}
+                      {% if school_schedule.trial_lesson %}
+                      <a class="js-video-modal" data-video-url="{{ school_schedule.trial_lesson }}" href="">Пробный урок</a>
+                      {% endif %}
                     {% endif %}
                   </span>
                   <span class="switch__cell">{{school_schedule.month_price}}р в мес.</span>
diff --git a/project/utils.py b/project/utils.py
index a1529b02..23234b58 100644
--- a/project/utils.py
+++ b/project/utils.py
@@ -13,6 +13,5 @@ def date_range(start, end):
     return
 
 
-def weekday_in_date_range(start, end, weekday):
-    counter = Counter([d.isoweekday() for d in date_range(start, end)])
-    return counter.get(weekday, 0)
+def weekdays_in_date_range(start, end):
+    return Counter([d.isoweekday() for d in date_range(start, end)])
diff --git a/project/views.py b/project/views.py
index bc00f173..8783b220 100644
--- a/project/views.py
+++ b/project/views.py
@@ -5,6 +5,7 @@ from django.db.models import Min, Func, F
 from django.contrib.auth import get_user_model
 from django.views.generic import TemplateView
 from django.utils.timezone import now
+from paymentwall.pingback import Pingback
 
 from apps.course.models import Course
 from apps.school.models import SchoolSchedule
@@ -49,26 +50,20 @@ class IndexView(TemplateView):
             school_payment = SchoolPayment.objects.filter(
                 user=self.request.user,
                 date_start__lte=date_now,
-                date_end__gte=date_now
+                date_end__gte=date_now,
+                status__in=[
+                    Pingback.PINGBACK_TYPE_REGULAR,
+                    Pingback.PINGBACK_TYPE_GOODWILL,
+                    Pingback.PINGBACK_TYPE_RISK_REVIEWED_ACCEPTED,
+                ],
             )
             school_payment_exists = school_payment.exists()
             school_schedules_purchased = school_payment.annotate(
                 joined_weekdays=Func(F('weekdays'), function='unnest',)
             ).values_list('joined_weekdays', flat=True).distinct()
 
-            school_payment_future = SchoolPayment.objects.filter(
-                user=self.request.user,
-                date_start__gte=date_now,
-                date_end__gte=date_now
-            )
-
-            school_payment_exists_future = school_payment_future.exists()
-            school_purchased_future = school_payment_future.last()
-
         else:
             school_payment_exists = False
-            school_payment_exists_future = False
-            school_purchased_future = False
             school_schedules_purchased = []
 
         if referrer and not self.request.user.is_authenticated:
@@ -90,13 +85,13 @@ class IndexView(TemplateView):
             'is_purchased': school_payment_exists,
             'min_school_price': SchoolSchedule.objects.aggregate(Min('month_price'))['month_price__min'],
             'school_schedules': SchoolSchedule.objects.all(),
-            'school_schedules_purchased': school_schedules_purchased,
+            'school_schedules_purchased': set(school_schedules_purchased),
             'teachers': User.objects.filter(role=User.TEACHER_ROLE, show_in_mainpage=True),
             'subscription_ends': school_payment.filter(add_days=False).first().date_end if school_payment_exists else None,
             'subscription_ends_humanize': school_payment.filter(add_days=False).first().date_end_humanize if school_payment_exists else None,
 
-            'school_purchased_future': school_purchased_future,
-            'is_purchased_future': school_payment_exists_future,
+            'school_purchased_future': False,
+            'is_purchased_future': False,
 
         })
         return context
diff --git a/web/src/js/modules/popup.js b/web/src/js/modules/popup.js
index b303d7a6..4e455840 100644
--- a/web/src/js/modules/popup.js
+++ b/web/src/js/modules/popup.js
@@ -92,6 +92,7 @@ $(document).ready(function () {
                 $(this).prop('checked', true);
             });
         }
+
         updateCart();
     });
 
@@ -189,12 +190,8 @@ $(document).ready(function () {
         }
 
         $('.order__days').html((daysText.length) ? daysText.join(', '):'Ничего не выбрано');
-
         var link = $('.but_btn_popup').data('link');
-
         link = link+'?'+decodeURIComponent($.param({weekdays: weekdays, use_bonuses: useBonuses || ''}, true));
         $('.but_btn_popup').attr('href', link);
     }
-
-    updateCart();
 });
diff --git a/web/src/sass/_common.sass b/web/src/sass/_common.sass
index adb623a6..c959b913 100755
--- a/web/src/sass/_common.sass
+++ b/web/src/sass/_common.sass
@@ -1836,6 +1836,8 @@ a.grey-link
       transition: opacity .2s
   &__cell
     padding-right: 10px
+    +m
+      margin-bottom: 5px
     &:first-child
       padding-top: 3px
       +fb
@@ -3799,9 +3801,6 @@ a.grey-link
   &__item.open &__buy,
   &__item.open &__more
     display: block
-  &__item.open &__buy
-    +m
-      display: flex
   &__item.open &__cell
     &:nth-child(3)
       +m
@@ -3863,7 +3862,7 @@ a.grey-link
   &__date
     opacity: .5
     +m
-      margin: -3px 0 0 auto
+      margin: -3px 0 0 10px
   &__buy
     +m
       flex: 1 0 0
@@ -3872,13 +3871,14 @@ a.grey-link
     display: inline-block
     margin-top: 10px
     +m
-      display: block
-      margin-bottom: -31px
+      position: absolute;
+      width: 120px;
+      margin-top: 6px;
   &__time
     margin: 15px 0
     opacity: .5
     +m
-      margin: -1px 15px
+      margin: -1px 15px 0 5px
       font-size: 12px;
   &__btn
     margin-right: -60px