The offer wall will give offers that have many steps, up to some hundred. When collecting many rewards for completing multiple steps at once, each step must be collected separately before anything else can be done. In extreme cases, a player may have to mash through hundreds of collect screens before being allowed to do anything else in game. If this is intentional, please change it so all rewards are added and collected at once rather than separately.
tl;dr) Collecting 2 beans at a time, 50 times in a row, was annoying. Please change the offer wall reward collection system, if possible.