Let'e Encrypt - Request Certificate - Gave up waiting for validation

I have several domains on this server and I just created 2 new virtual servers today 1 no issues, the other nothing but hell with several attempts. I'm confused because all others on the server work except my system has a bias against this domain name - my domain name, so I guess it really does hate me... LOL.
The actual error I get from the page https://A-HOST.MY-DOMAIN.com:10000/virtual-server/letsencrypt.cgi (*not real name of my server obviously) is: