DuckDNS Error: Updating DuckDNS domain failed

Hi all,

My system was working perfectly smoothly for a while but a few days ago it stopped working with DuckDNS… I have the following error in the HassIO logs:

Updating DuckDNS domain failed: <subdomain>
Received message for unregistered webhook <abcd....>

And plenty of other new errors…

I also get this screen when I try to access my system via the Duck DNS:

Any idea what’s gone amiss?

bump! Anyone?