Crazy WiFi issues

Out of the blue the other night we ran into some WiFi issues. The wireless portion of the router decided to just stop working. Normally when it doesn’t work a simple reboot of the modem and router fixes it, but this didn’t. It almost seems to have been factory reset.  So I have spent the last couple of days (on and off) changing settings and testing.

It’s frustrating because I don’t know if there is some setting that I am overlooking, so if anyone has any suggestions let me know!