On Saturday I played most of the day, taking advantage of the double XP weekend. I rebooted, and got to level 10 or so.

The next day I started playing and noticed something was off (a few things actually. I was reset to level 1, too) with the XP I was getting for my challenges (challenges of the Social, Crynet, Squad, and Lobby variants.) Certain challenges gave me almost 6k exp on Saturday. Those same challenges, the next day, gave me almost half. I attributed it to the double XP. I assumed that the challenge XP wasn't supposed to be doubled, and, as a result, it was changed.

Then, today, I started playing and realized that this was not the case. I am getting, once again, half the XP for the same challenges that I was getting yesterday.

I also guessed that it was because I was a lower rank. I am now mid 30's, about as high, maybe a bit higher, as I was when I was playing Saturday, and there's still no change. Someone please help me understand what's going on here, please.