I'm currently at the Food Drive mission where the children's hospital is looking for any food (again). But no matter what food I select, it always says it's the wrong item. Am I misunderstanding "any food"?
If it is the food drive missions given by the lady selling gardening stuff in the park, the mission description stated what is needed. I do not remember delivering wrong items there. The lady shows the mission description again if you forgot what was asked for.
Are you perhaps playing version 0.20? That is a test version that is full of bugs and does not work.