yes, of course I did it exactly the way you described. In the end I also found the reason why it did not work: It does work for public groups, but not for private groups. Is this also the same on your side? And if yes, do you know if there is something to get the same result for private groups?
thank you for your info. But unfortunately it has not worked, that a registered WP users automatically became a BP group admin after his group membership request was confirmed from BP group admin. In the attached doc I explained how I did it. It would be great if you can find out the issue