Missing Quest

I've had the Titan extreme quest (Quake me up before you O'ghomoro) for months, and haven't been able to complete it. Last night I ran it and finally had a group that could live and dodge through it. Unfortunately, once I exited Titan I didn't see the quest in my quest log.

I went to walking sands to see if I could get Ifrit Extreme, however I am only able to get Titan Extreme quest again. So I followed along through it, and its asking me to use to duty finder to confront titan in the navel extreme.

Now since you need the quest to be able to get into Titan extreme and I have the achievement, I'm a little baffled. I haven't abandoned any quests, and its been on my screen for a long time.

Can you please fix this so that I get credit for my Titan Extreme as its not giving me credit.