Monthly earning values got to zero

Are there database related errors in your node’s logs? Or other errors maybe?

If it’s definitely your database files, here are some additional info that may be worth checking out:

Maybe it’d be wiser to wait for @Alexey’s input as suggested by @Stob though.

In any case if your database files got corrupted, it’s probably a good idea to run a disk check to make sure the disk isn’t starting to fail. Because if any lost database file can be recovered and will do almost no harm to your revenues, losing data cannot be fixed and could be a fast way to disqualification if not caught in time.