HotSpot not working on apple devices.

Hello, iphones cant connect to the hotspot network.
sometimes they can connect to the wireless signal, sometimes cant get an ip and sometimes can get the ip but the login page goes to a blank screen.
Hotspot dns is a valid domain pointing to hotspot main local ip address.
working perfectly on android devices.
any idea of how to solve it? thank you!

Please post more information and you config. Thousands of people use Hotspot with iPhones as the clients, many popular airports use RouterOS, so it must be something specific in your config that iOS does not like