AP problem

Erkan

Hello,
I have 2 Zyxel switches and 3 nwa90ax APs in my system. I had a system that was working properly until yesterday. There was 1 SSID defined in the system. I added 2 more. Today, one of the APs started not working properly. When I removed it and moved it to another place, it works properly. But it does not work in its original place. I changed the entry point on the switch, but the same situation still occurs. How can I solve this? The blue LED is constantly flashing in its place. The green is not on.