Buddypress Fake (non-bot) Users [closed]

Fake registerion to buddypress is a real pain in the !@$ (pardon my french).
I’ve tried math question, captch, sabre and other plugins but none of them seem to work.

So far, only WangGuard did the trick. It won’t give you full protection against those registrations but it’s the most efficient tool I’ve found against them.