Group not found here too
Ditto. Thought the comment:
"If you are still unable to access it, likely there was a typo when you submitted it or you'd never previously accessed the regular xbox.com forums. Below are some steps to get you fixed up:
1. Log into xbox.com and post in the standard forums so that you create a presence within the forums
2. Resubmit your GamerTag via the survey section on Connect
Once submitted it takes ~5 business days for us to update the permissions for you to access the Private Forums "
...is that legit.
I have the same problem and I'm pretty sure mines all legit.