this is what happens when your account is under review by google, they cap spending at $50.00 You can do a few things:
1. wait it out, they will eventually take you off review but it can be a few days to a week
2. give them a call. If you aren't doing anything wrong at all then call them and explain the problem and they can expediate the process.

I've done both methods in the past and they both worked.

Good luck