A test authorization for catona.cloud to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
23.95.47.78: Fetching http://catona.cloud/.well-known/acme-challenge/apII-0O-24l82NSVWcllU1yKtahNpgh2EKp4AEQqx3k: Timeout during connect (likely firewall problem)