I've had two R7000 routers (east & west coasts) for 4 years and the Netgear DDNS (xxxx.mynetgear.com) for both has always worked.
However, neither DDNS is working today. On my local R7000 here on the east coast I tried to to re-enter my Host Name, Email and PW and received the error message "The email/account specified does not exist". When I click "Show Status", I get the error message "Update failed at 08:19PM,11/16/2020 The service provider is not reachable".
I solved it. Even though I don't know why Netgear's DDNS server stopped propagating both my R7000 Host Names to DNS servers, I've solved the problem by resetting both my Netgear DDNS accounts under Advanced/Advanced Setup/Dynamic DNS on both my R7000 routers and then re-registering them. After that, both my R7000 Host Names were propagated to DNS servers as they should be and both my R7000 routers are now reachable over the Internet by Host Name again. In order to do this Reset to my unattended, remotely-located R7000, I had to initially reach it by IP address instead of by Host Name.
