A test authorization for wplesk.citrahost.com to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
103.123.16.178: Fetching http://wplesk.citrahost.com/.well-known/acme-challenge/VLO1RvsRwcSjw5uyiyn3YuS-xlDNsQvYeWmBLoIh6YA: Timeout during connect (likely firewall problem)