Who's your ISP ? What's the device before the AX10 router ? Did you set the same Internet port configuration as with the old router ?

If the device is still under warranty contact the retailer for help. If the retailer can't help, then contact your local support to advise you on that.

@ahmedfawzy Hard reset (method 1).

Yes, it's normal to have these watermarks on BETA FW. Glad you have that resolved.

That's a typical usecase for AP mode. Do the testing as you planned and decide by yourself.

@Ksmbo Is the C80 WAN port IP address private (like 192.168.x.x) ? In general using C80 as an AP (in this scenario) you can avoid double NAT in your network. The benefit is easier troubleshooting...