Yea by nursing i mean keep reopening if it doesnt work at first, set the loot slider to 1-100 (doesnt seem a lot diff in my exp) but before it, save from top right corner then try, for instance upgrade town with diamond, if it increase then it worked, if decrease then force close, clean tab, reopen the game again
Then try crafting, then instant finish, just like before if it worked or not, if not then try another way..