BuddyPress.org

1. There is number of discussion on this forum about issues signing up… most likely they didn’t get the activation e-mail …check spam/junk folder…. I tried to register for your site and did not recieve the e-mail so it may be you are having trouble sending mail from your server? Can you get it to send you an e-mail?

2. This has be solved here:
https://buddypress.org/community/groups/how-to-and-troubleshooting/forum/topic/fatal-error-when-trying-to-delete-user/
3. If they have created member accounts and have not “verified”… it may not show as they are listed as “spammer users” until they register…so I’ve read here.
Here is another link:
https://buddypress.org/community/groups/how-to-and-troubleshooting/forum/topic/test-7/
…and another:
https://buddypress.org/community/groups/how-to-and-troubleshooting/forum/topic/members-list-not-showing-bp12/