subscriptions/views/join.py

@@ -135,7 +135,7 @@ class JoinView(LoginRequiredMixin, FormView):
 
         with transaction.atomic():
             subscription.plan = self.plan_variation.plan
-            subscription.user = self.user
+            subscription.customer = self.customer
             # Currency must be set before the price, in case it was changed
             subscription.currency = self.plan_variation.currency
             subscription.price = self.plan_variation.price