max-server.org has an A (IPv4) record (45.84.197.41) 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 max-server.org/45.84.197.41: Get "http://max-server.org/.well-known/acme-challenge/letsdebug-test": dial tcp 45.84.197.41:80: i/o timeout
Trace:
@0ms: Making a request to http://max-server.org/.well-known/acme-challenge/letsdebug-test (using initial IP 45.84.197.41)
@0ms: Dialing 45.84.197.41
@10001ms: Experienced error: dial tcp 45.84.197.41:80: i/o timeout
A test authorization for max-server.org to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
45.84.197.41: Fetching http://max-server.org/.well-known/acme-challenge/-d0DDFjUc2lVqyI9okUAE6A7SuQ-OfoHYpDmJr2fvdg: Timeout during connect (likely firewall problem)