Promotion system in V.3.8.2 don't work for me?

[fionix]

I have a few members on my forum which have a post count above 15 and now I set the promotion up, to set users with a post count of 15 to an additional usergroup which gives those users permission to some new forums. (which only this usergroup has access to)

However, I have a user with post count 82 and this user has not access to the forum which he should have if the promotion worked.

any update I have to made or any thing else Im missing.

Any help is much appreciated.