I have set up a brand new AX6000 router, latest firmware installed, and most things are working fine except that devices will not connect to the WiFi. I initially set it up with OFDMA enabled, Smart Connect enabled, WPA2-PSK/AES security, and Airtime Fairness enabled. Devices that tried to connect would fail authentication and suggest verifying the password, which absolutely matched. This would happen after rebooting both the router and the device, and across multiple devices.
As a troubleshooting measure, I tried scaling everything back so that there was no guest networks enabled, all options disabled, no security, and only the basic 2.4 GHz radio enabled. Even with all of that, devices will not connect to WiFi. Does anyone have any other thoughts or suggestions? Do I have a bad device?