Got a strange one with OC200 controller. All connected and all working okay with 4 APs attached. If I try to manage using the Android app, I get an error of 'failed to get IP address' and I am unable

Hello i have issue with my wired clients connected to my EAP's-235-wall they will not shown in my OC200 controller, if i will reboot the controller they will shown for just a while and disappear later