Sending an ACME HTTP validation request to www.roomieads.com results in an unacceptable redirect. This is most likely a misconfiguration of your web server or your web application.
It appears that a redirect was generated by your web server that is missing a trailing slash after your domain name: https://www.roomieads.com.well-known/acme-challenge/letsdebug-test. Check your web server configuration and .htaccess for Redirect/RedirectMatch/RewriteRule.
Trace:
@0ms: Making a request to http://www.roomieads.com/.well-known/acme-challenge/letsdebug-test (using initial IP 149.28.126.186)
@0ms: Dialing 149.28.126.186
@237ms: Server response: HTTP 302 Found
@237ms: Received redirect to https://www.roomieads.com.well-known/acme-challenge/letsdebug-test
A test authorization for www.roomieads.com to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
149.28.126.186: Fetching https://www.roomieads.com.well-known/acme-challenge/jkkU3cqK0qjwCm9NOxxAo8-v3Iv2w5jQ2LeLwTA1DFU: Invalid host in redirect target "www.roomieads.com.well-known". Check webserver config for missing '/' in redirect target.