The browser (Brave) came back with :
This site can’t be reached
68.67.....1 refused to connect.
(I edited out a couple characters to post it here as I am not sure what the security risks might be.)
Anyway, that’s the same message I got this morning working to find an address via Settings. (I also tried Edge: the wording was slightly different.) I think it is the same address as this morning, but I am not sure.
The phone is still connecting to the web via the wireless router, just fine.
just some more guesses here...
your router-modem appears to be alive and at least minimally working.
does it use http or https for browser based configuration? or non-browser based configuration? a mismatch will cause an error corresponding to the lack of an appropriate configuration server on the router modem. assuming you want to configure it.
https is the secure version of http.