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 http://www.roomieads.com/.well-known/acme-challenge/9vY3vxbA_GgbY74NnpPFdKeumYs9cUJYYFrEnkv7HCA: Connection refused