Money bug in Mac version

Hi everyone!
I just bought the game for Mac and it was working fine until I came across a bug.
It turned all my money into negative, so I can do nothing. I can’t buy anything, or book practice rooms, or anything…
I don’t remember doing anything wrong or weird. All my money turned into negative. If I had 1000, it turned to -1000
Please help!

Thanks.

I had this bug some times too, i don’t know why it happens but the only way is to re-start the game and hoping this time it doesn’t happen!