Hey guys I can't see the keys in the vault. This is my second time getting a vault ticket so do the keys only show up once?

Hello, I am currently trying to raise my dps as a subtlety rogue, usually it lays around the 25-30k but it seems like my regular melee attacks does way more damage than any of my abilities. which doesnt seem right?
 
 
I am currently mostly pvp geared for assasination.
 
 
here is my armory :http://eu.battle.net/wow/en/character/grim-batol/Isendier/advanced
log is in the comments.
 
 
I hope that i posted this the "right" place and that someone out there can help me
 
-Isendier