OK, 2nd Mystery Solved too:
I went ahead now an applied to the Absolute Poker program at income access.
They confirmed it right away and I checked the stats for Absolute:
I was correct in my assumtion it’s the 2nd tier that earned me those nice bucks!
I must say that Income Access is one of the few programs where the 2nd tier really works. I get $50-$100 from my lassaters 2nd tier every month and now from Absolute too.