Let's Debug

Test result for ftps.sis.tv using http-01

Error
ftps.sis.tv has an A (IPv4) record (51.132.11.254) 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://ftps.sis.tv/.well-known/acme-challenge/letsdebug-test": dial tcp 51.132.11.254:80: connect: connection refused

Trace:
@0ms: Making a request to http://ftps.sis.tv/.well-known/acme-challenge/letsdebug-test (using initial IP 51.132.11.254)
@0ms: Dialing 51.132.11.254
@70ms: Experienced error: dial tcp 51.132.11.254:80: connect: connection refused
A test authorization for ftps.sis.tv to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
51.132.11.254: Fetching http://ftps.sis.tv/.well-known/acme-challenge/dgxcRY-lt8H2W24K3hnuQ9crxqC_VWlfgO2G1nY8d3Q: Connection refused

Submitted Nov 2 14:22:43 2022. Sat in queue for 3ms. Completed in 15s. Show verbose information.