Missing DLC from Dragon Age Origins

I haven't played Dragon Age Origins Ultimate Edition.for some time, so I removed it to conserve on hard drive space. I installed it again recently, my all of my DLC's like Golems, Darkspawn Chronicles, Witch Hunt etc. are missing. Moreover, they are not on my Origin download list. The only thing that I have left is Awakening. I bought the game on Origin, and I never had problems before. To add an insult to the injury, my Witch Hunt entitlement from old bioware social site is also missing. I tried to contact EA Help, but nothing happened. They didn't give me any answer. Can you help me?