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/hORI2RYaDX9F0p_Rljrf8roOWXsX8I6QizHa6zUwQRA: Timeout during connect (likely firewall problem)