Let's Debug

Test result for test.ravecat.io using http-01

Error
test.ravecat.io has an A (IPv4) record (91.202.206.131) 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://test.ravecat.io/.well-known/acme-challenge/letsdebug-test: dial tcp 91.202.206.131:80: connect: no route to host

Trace:
@0ms: Making a request to http://test.ravecat.io/.well-known/acme-challenge/letsdebug-test (using initial IP 91.202.206.131)
@0ms: Dialing 91.202.206.131
@3132ms: Experienced error: dial tcp 91.202.206.131:80: connect: no route to host
A test authorization for test.ravecat.io to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching http://test.ravecat.io/.well-known/acme-challenge/Bcg4Q4YQtCQ2C405cbun4j8Cq22Hj8mvKOAAQSk50gA: Error getting validation data

Submitted May 15 04:30:30 2020. Sat in queue for 3ms. Completed in 9s. Show verbose information.