I just installed the v936 on Android and
In game tried to buy piggy bank from pc but it gives error
Viewing post in School Game / Sandbox, Simulator, RPG comments
V 936 online store is nonfunctional, downgrade to 935 to make purchases in the online store. Your save file will work between the two versions, so you can save in 936 then close, open 935 to make your purchases, then save the purchases and open 936 again. At least doing so works on PC, I don't use my phone for games, so don't know if this will work for you.