You might have found that during fights you lost BP and levels instead of gaining BP. It should have been fixed and your levels should have returned to normal.
If you have any more problems or you think something hasn't gone back to what it should be please could you contact support, link can be found under the green ? or use this link http://www.urban-rivals.com/staff/contactus.php , and they will look at and try to solve your problems.
Sorry for any inconvenience caused and thanks for the help,