Every 10 minutes experience an attack. It only happens when iPhones and iPads are connected. Have 4 EAPs in a mesh network. Is this a problem. And any idea on how to fix.

I have an EAP225 controlled by a Linux Omada Controller version 4.1.5 4.2.4. The "Clients" view in Omada shows connected clients, but it takes forever for disconnected clients to be purged from the li