Looks like this project has some technical issues regarding some mistakes and misunderstandings, even wrong calculations. A lot of mistakes should be fixed here
What? It's not mere mistake and misunderstanding, it was a fatal error that shows how thoughtless the dev is when he build this last-minute project. It's not a typo or something like that, it's an half assed effort to put numbers without really calculating them. Say, would you trust a project like this?