nitrozeus.site has an A (IPv4) record (94.130.164.204) 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 nitrozeus.site/94.130.164.204: Get "http://nitrozeus.site/.well-known/acme-challenge/letsdebug-test": dial tcp 94.130.164.204:80: i/o timeout
Trace:
@0ms: Making a request to http://nitrozeus.site/.well-known/acme-challenge/letsdebug-test (using initial IP 94.130.164.204)
@0ms: Dialing 94.130.164.204
@10001ms: Experienced error: dial tcp 94.130.164.204:80: i/o timeout
A test authorization for nitrozeus.site to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
94.130.164.204: Fetching http://nitrozeus.site/.well-known/acme-challenge/-G-mgyj6_1_MWqaJs811bfK6sSxDphu7C-K79ypBmH8: Timeout during connect (likely firewall problem)