Port 80 is filtered (blocked) by something. Port 443 is open and working although uses an expired cert. Probably why you are trying to renew it 
In any case, you need to review your HTTP (port 80) network config with your new host.
Use https://letsdebug.net to test any changes to your comms
PS: Oh, and adding on to 9peppe's comment about certbot-auto is this notice from Dec 2020 (but this does not explain your blocked port 80)