Archer AX6000

√ I have configured the router using the tether app. Router is work OK and is FINE.

√ I can access the router through the Tether app FINE.

X http://tplinkwifi.net   does NOT work now.

X http://192.168.0.1        does NOT work now

The internal  IP address for the router on my network is 192.168.86.66.

X http://192.168.86.66   does NOT work either.

Questions

1. What is the web portal for admin access for the router to manage it from my PC? <<<
2. How do I check the firmware of the router? <<<
3. Where can I find the new firmware? <<<
4. How do I download the new firmware to my router? <<<

Thank you all for your help. I chatted with tp-link tech support but they could not help