remote.cinnamonhills.org has an A (IPv4) record (104.192.203.239) but a request to this address over port 80 did not succeed. Your web server must have at least one working IPv4 or IPv6 address.
A timeout was experienced while communicating with remote.cinnamonhills.org/104.192.203.239: Get "http://remote.cinnamonhills.org/.well-known/acme-challenge/letsdebug-test": dial tcp 104.192.203.239:80: i/o timeout
Trace:
@0ms: Making a request to http://remote.cinnamonhills.org/.well-known/acme-challenge/letsdebug-test (using initial IP 104.192.203.239)
@0ms: Dialing 104.192.203.239
@10000ms: Experienced error: dial tcp 104.192.203.239:80: i/o timeout
A test authorization for remote.cinnamonhills.org to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
104.192.203.239: Fetching http://remote.cinnamonhills.org/.well-known/acme-challenge/kxpmeyFojwyKaxuVJ1Ob87uMtuNMJPmeko3W-PHrFbo: Timeout during connect (likely firewall problem)