Lost all my money

Been playing for over a year. Got all the weapons, on level 37, and then out of nowhere, a minus sign shows up on my money. I had over 2 billion dollars!! I cant repair my armor, cant buy bullets, cant play. Loved the game, played it often. Had to delete the game as I couldnt play anymore. Whats up with this????

Eyepere about DEAD TARGET: FPS Zombie Games, v1.0.7