@Kevin_Z Thanks for your questions and suggestions. My observations / comments are: A. No error message if I input a new admin password as prompted; in fact, nothing happens - it just stays on that...

Update on 4 from original post: internet works for about 15 minutes after the problem was discovered, but then starts having problems. Ping or nslookup from laptop with a wirelessly assigned DHCP...

Bought the Archer AX50 two weeks ago (in Taiwan). There are a few niggling issues with this router that will hopefully be sorted out in future firmwares (logs and real time traffic monitor don't seem...