To deal with the problem in WordPress plugin

There is a samopisny plug-in on WordPress for the website question and answers vamber.ru/
The plugin has several features, but we are interested in what hes doing next:
- for every 100 characters of the response to the user charges a 0.25 RUB.
- as soon as a comment (response) welcomes the moderator, the user gets the amount of his balance.
- if a moderator within 24 hours after the adoption of the answer deletes it, then takes the money back.

The problem:
The script was randomly (cant follow the logic), some of your users through 1-3-5 hours (any time) after charging the money to write them back, although the answer was not removed. You need to find the cause of this problem (why the script writes off the accrued money back), to offer the option to troubleshoot and fix.

If the budget is not suitable to send your.