Let's Debug

Test result for multi-pool.info using http-01

Error
multi-pool.info has an A (IPv4) record (78.26.93.123) 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://multi-pool.info/.well-known/acme-challenge/letsdebug-test": dial tcp 78.26.93.123:80: connect: no route to host

Trace:
@0ms: Making a request to http://multi-pool.info/.well-known/acme-challenge/letsdebug-test (using initial IP 78.26.93.123)
@0ms: Dialing 78.26.93.123
@3106ms: Experienced error: dial tcp 78.26.93.123:80: connect: no route to host
A test authorization for multi-pool.info to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
78.26.93.123: Fetching http://multi-pool.info/.well-known/acme-challenge/ORs5c6Ec1ctvUtzem3i2eR-EWoWtSXIKAViv84JMZHw: Error getting validation data

Submitted Nov 20 17:37:08 2023. Sat in queue for 3ms. Completed in 7s. Show verbose information.