Halo CEA terminal glitch?

Hello, Today I ran across a big problem, I had one terminal left on the library, was fighting towards it on heroic, I pressed X and… No achievement popped up on my screen. Puzzled, I checked the terminals I HAVE unlocked, and it said I had read only four of them! It’s odd because I have the heavy reading achievement too!

Could anyone help solve this problem?
Thanks in advance
EDIT: Keyes and the maw just came up! I am still puzzled because I have read all of them.

I think you might need to watch through them all (from start to finish), again.

Another thing could be because of cloud storage. If you disconnect your system from the net after shutting it down, your saves won’t be uploaded and will be lost. (I’ve had the new dashboard for a few weeks and learnt this the hard way…)

I have the achievement for all of the terminals, Waypoint should be reading my Achievements and not the save point.

> I think you might need to watch through them all (from start to finish), again.
>
> Another thing could be because of cloud storage. If you disconnect your system from the net after shutting it down, your saves won’t be uploaded and will be lost. (I’ve had the new dashboard for a few weeks and learnt this the hard way…)

Hate to say this randomrosso93, but you don’t have to watch though them all. You just have to start them. I would suggest going back on the easy difficulty and getting all terminals again. My guess is the system just glitched up. Hope that helps.