I'm very sorry to hear of your problems registering in our support forum. We are looking into the issue to see what may have been the issue.
We did have a problem on a couple of days last week with spammers/hackers hitting our site so hard that it became almost unresponsive - I wonder if this is when you encountered these problems.
I use CB, GroupJive and CBSubs and lots of plugins (almost all!) On my websites and I think it is really rich in possibilities. Initially, I am neither developer or webmaster and I still make the site I wanted. Thanks to the help of the team and its Joomlapolis forum, I was able to create a complete social network with all the necessary functions for the grow! Good luck to Joomlapolis in development;)