i have that problem too, but it turns out that Ive just been spending them...lol But seriously....there r things that cost FP at every turn and most of these actions dont need to be confirmed. My guess is that your accidentally purchasing refills or limited items
Been there done that! I have a few God Items I've accidentally purchased when the screen jumped at one of the infamous hourly refreshes I wish I could have reverted. I was heavy into battle and somehow the homepage popped up and pow! 25 points gone. This could be a good case for a small window to reverse a GP purchase. (A minute or two) I haven't had as many accidents since I left IE and went to Firefox. I'm not sure what it was back then and if it was fixed but we use to accidentally refill health and lose 4 points all the time. It's easy to refill stam if you get too click happy also. But as far as my GP's just dropping out of thin air I don't recall that ever happening. I have in the past had my skill points and God Points not show up correctly and I cleared all my cache and restarted my PC and went back into VC and all was right. It's worth a shot before you contact support.