@SanDiegoPhil Did you happen to try http://192.168.1.11

  @SanDiegoPhil What is the IP and Subnet of the Primary Router?  What is the Subnet of the AX6000.  IF the subnet is 255.255.255.0 then the primary router's IP and the AP should match 192.168.1.xxx and only the xxx must be different....

  @jzchen yes, those match.

I can login to the router via the web interface, but as soon as I do, it auto-redirects to tplinkwifi.net

-phil

  @SanDiegoPhil What is the primary router model please?  Also is it set to router mode?

Maybe try https://192.168.1.11

  @jzchen My setup looks like this:

AT&T Fiber --> AT&T Fiber Broadband Gateway (BGW320-505) --> QNAP QSW-M2116P Network Switch --> TP-Link AX 6000 Routers (2)

The primary router is definitely the primary router, the two TP-Link AX 6000 routers are set in Access Point mode.

The primary router has an IP address of 192.168.1.254, and a subnet of 255.255.255.0.

-phil

  @jzchen I have tried going directly to: https://192.168.1.11

I get the login page, I type in my password, and it seems like it's going to login, but then immediately redirects to tplinkwifi.net

-phil

Here is a video of the issue I am seeing.  I have tried all the solutions listed and I still get this.

https://www.youtube.com/watch?v=2hpRGvUvaTE

Solution #3 isn't really what I'm after.

  @SanDiegoPhil Are you okay with setting the 2nd AX6000 as a mesh node?  I think there's a defect if both are APs....

EDIT-  Checked and this doesn't support wired backhaul for mesh.  Probably want to disconnect one AX6000 or power it off while configuring, then do the same for the other, if you haven't tried this yet.

  @jzchen how would turning one off help?

I tried changing the WAP name on the second AX6000.