I have had issues in the past with quest saying pending when i've completed them. I now have another quest that says "pending". It's the HD quest. Also, some quest I was doing has vanish. I have no even collect all items, it does not show up for offer quest, or show in my quest history (in case it did say I completed it)/ I was trying to do the Theadora quest with the reward of piercing bullets and I only had 1/3 boxes which was the red one. I have another quests missing. Some I can't remember, but I do remember the quest where I had to pick up blood sample from tier 3 tank.