Hotspot in Mikrotik as a warning to self-exit users. Especially iPhones. How to decide?

Question

Mikrotik

Especially 4 out of 5 users are iPhone users.
users are disconnected from the Internet, such as a session time of 3 days, for example, and disconnections occur several times during the day. I ask you to help me what I should do that they no longer called the reception))
I would be very grateful.

Answer 1

At least give the logs and settings

Answer 2

Binding on the poppy, no?