IMPORTANT NOTES:
- The following errors were reported by the server:
Domain: xx.yy.no
Type: connection
Detail: Fetching
http://xx.yy.no/.well-known/acme-challenge/UqI5jVJ0wMvjY1xvJsTv3L3c1vKkkIrfwX-j0Gi3O8:
Timeout during connect (likely firewall problem)
To fix these errors, please make sure that your domain name was
entered correctly and the DNS A/AAAA record(s) for that domain
contain(s) the right IP address. Additionally, please check that
your computer has a publicly routable IP address and that no
firewalls are preventing the server from communicating with the
client. If you're using the webroot plugin, you should also verify
that you are serving files from the webroot path you provided.
我可以公开访问该网站。因此，端口 80 显然是开放的。
这里可能存在什么问题？