I was playing last night - no where enough to meet any XP cap - and on the last game i played i had won my 117th game so i was awarded the XP for the Monthly challenge. I saw the XP go up the 17343 points, so i only had around 3900 xp left to get to my next level. this morning i wake up and get on and that 17343 is no longer applied to may account, but it still shows i completed the challenge.
I want my xp back, i earned it!