getPurchaserInfo() return actual data only after purchaseProduct()

Hello! I’m really destroyed and don’t understand how to solve my problems.

I have one apple account and can create multiple user-accounts in my app. First case:

• User A login (with logIn())
• Buy purchase
• User A logout (with logOut())
• User B login (with logIn() another appUserId)

Now User B have subscription from User A. But i want the User B to not have a subscription in this case. What can i do?

And more one, in this case after login method getPurchaserInfo() return not active subscription (I’ve been awaiting more than 5 minutes (time for reset cache but got not active). After this i show payment card and by tap (call method purchaseProduct()) user B see system alert with “have already subscription”. And after this method getPurchaserInfo() for User B return active status of subscription. 

What can i do in this case?

Thanks for support!