There is no reason for your character to have lost an AP Reset as of the last patch. If you can provide more information about your situation, we may be able to help, however as it stands, there will be no refund for this.
Stop playing mapleroyals in December until yesterday. When I check my inventory I noticed that I only needed ap reset when I enter a cash store in 2 slot I got 2 reset but said that I had "0" in quantity. I had about 156 ap reset