@symphony I think most zigbee devices will connect to a hub….and that hub would/should be connected to the internet via Ethernet….so as long as the internet is still on line then you would still have remote access to the devices connected to that hub….regardless if the WiFi went down or not.
Well that is how it is for my Philips hue lights and for my Tado radiator TRV’s.
So in theory, you could connect a Philips hue smart plug to an outlet and plug your WiFi AP to that and you would be able to reboot the WiFi AP remotely….obviously this would not work quite as well if your WiFi AP also happens to be be your actual router, as you would lose the remote connection briefly while your router rebooted and reconnected to the internet.