htpcomp.co.uk has an A (IPv4) record (77.243.191.20) 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.
Get "http://htpcomp.co.uk/.well-known/acme-challenge/letsdebug-test": EOF
Trace:
@0ms: Making a request to http://htpcomp.co.uk/.well-known/acme-challenge/letsdebug-test (using initial IP 77.243.191.20)
@0ms: Dialing 77.243.191.20
@161ms: Experienced error: EOF
A test authorization for htpcomp.co.uk to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching http://htpcomp.co.uk/.well-known/acme-challenge/u9P21nvnyUpMPsBzvxKmshhzw6HjAoEYV6AAKvykrDU: Error getting validation data