Let's Debug

Test result for cra.nmgcb.org using http-01

Error
cra.nmgcb.org has an A (IPv4) record (164.64.172.202) 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 cra.nmgcb.org/164.64.172.202: Get "http://cra.nmgcb.org/.well-known/acme-challenge/letsdebug-test": dial tcp 164.64.172.202:80: i/o timeout

Trace:
@0ms: Making a request to http://cra.nmgcb.org/.well-known/acme-challenge/letsdebug-test (using initial IP 164.64.172.202)
@0ms: Dialing 164.64.172.202
@10001ms: Experienced error: dial tcp 164.64.172.202:80: i/o timeout
A test authorization for cra.nmgcb.org to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
164.64.172.202: Fetching http://cra.nmgcb.org/.well-known/acme-challenge/9x4uNDBGoOKRwsU9u0V2nKZdp02bWEawmPjKl3Vfglo: Timeout during connect (likely firewall problem)

Submitted Oct 14 18:19:17 2022. Sat in queue for 5ms. Completed in 20s. Show verbose information.