Hi everything except maybe the inventory system should work perfectly. With the latest update of renpy itself the inventory framework I used completely broke and I don't personally know how to fix it. Nothing else at all was disturbed though so if you go into the files and just completely erase the inventory system links it should be completely fine.
I am working on a completely updated version though just gotta figure out how to get an equal or greater inventory system up and running I think I'ma update the description with a warning though for all future downloaders