I am now not allowed to use geas on my adept powers, I was at first, but not anymore .

Second if I take way of the artisan and walking the ways, could i get 50% of a power or don't they stack ?
Third, I'm really tired of my GM constantly having different problems with a build that is neither overpowered or silly, any ideas on how to best deal with this ? Or should I just scrap the entire idea and find another game to play in or something ?