I have schedules set for restricting access by MAC address during night and early morning fo rmy son's devices. The problem is these schedules will work for a few days then randomly stop working. I check the router and nothing has changed but the device suddenly has full access when it should not.
I have checked the router time setting and it is correct and set to automatically update.
If I reset the router, the blocking action will restore for a while.
This is very frustrating to think a device is blocked only to find that it mysteriously is able to connect again.