So, after trying to talk to the support who litteratly didnt cared about what I asked.. I come here to ask for a final help !
After a restarting, all the stacks in game are now limited by ONE item. 250 Iron become 1 Iron and even when gathering, getting 4 stones on the ground become 4 individual stone in your inventory and YOU CAN'T STACK THEM.
Can someone help me plz !