I have a SOHO MK3 and setup a schedule to turn the WIFI AP off at night. When it comes back online in the morning, no devices (fire tablets, windows laptops, etc) can connect to the router’s wifi unless I reboot the router. It broadcasts the SSID but nothing can connect to it. I have firmware 8.0.2 and will try 8.1.0 Beta.
Wired connections work fine.