Most of my dogtags were removed constatntly (not all dogtags though, some like "Suit Reboot" are still there). I just tried logging in again today, and my entire Social 1 dogtag tab (that's tab 5) was completely gone. This happened many times before, ever since the patch was released. I would receive dogtags while playing, and the next day many would disappear.

I also have problem obtaining the Challenge dogtags. I've complete many of the challenges during multiplayer (SOCIAL, CRYNET, LOBBY and SQUAD challenges). However, I was never received the dogtag reward for completing SOCIAL challenges (I have received the others).

Anyone else having this dogtag problem?

Have you tried searching for "Dogtags" @ c3 forums? Because when i do it, there are a couple of threads about this problem.