So I have aqcuired the Dawnguard Heavy Armor, and I have the perk under heavy armor "Matching set." But for some reason I don't get the matching set bonus when wearing all of my Dawnguard armor. AND the helmet's ability is "25% less damge from vampire attacks and Drain Life spells, while wearing a complete set of Dawnguard armor." I'm wearing all Dawnguard Heavy Armor, but neither of these above things are working.

Has anyone else encountered this problem, or found a way to fix it? Please help. Thank you!

could be a bug, wait and see if anyone else has the problem

Are you sure you're wearing heavy gloves and boots?

Yes, I'm absolutely sure.

I don't know then. I haven't heard of anyone else having this problem.

I'm having the same problem. I assume everyone is, they just probably aren't looking. I made a post about this in the support forums, for what it's worth.

This glitch was experienced in the Beta. I reported it then. I'm sure a bug fix is on the way. Or at least, Bethesda has taken notice.

Bugfix for a Beth DLC....
Will not happen and the chance that this bug will still be in the PC and PS3 release is 99,9 %
(sry but this is prior experience from other Beth games)

Typical Bethesda. Why do they even bother with beta testing? They just ignore all the bugs and glitches reported.