Your application has exceeded a limit of the "File storage"

Your application has exceeded a limit of the “File storage” on the current plan. All API calls are now blocked until the limits are increased.
any reason why? This happened all of a sudden. we are not even deloping but dont want to lose the already developeed code. A bug in thesystem?

We’ve found your apps (as i understood you have two of them).
What the app you have a problem with?

You exceed the limit of repo size in the app: 71669DB0-B9B5-8C55-FF9E-87E736612D00.
There is 1853 files with a total size about 5GB.