Also- the match being stuck on 50 is typical of an unshopped game. The match unit is basically a small stepper motor sandwiched between a couple circuit boards with a bunch of copper traces on them- arrayed kinda like petals on a flower. Those traces are the contacts for the 0-9 match lights and circuit. Most likely the stepper motor part is gummed up and siezed. You can take these apart and clean them and they typically are trouble free in home use after being shopped. If its always been this way since you got the game its likely this. If it just started and happened along side something else its probably a different cause.
My advice is IGNORE this one for now... but please post here when it started doing this and if it was at the same time an other problem started.
Those are more conplicated than they look at least in terms of mechanical and the number of components and the number of screws you need to remove to fully clean them. Wait until your a little more familiar with the game- its not affecting game play.