I got my last achievement in Sudoku (WP) and I saw it wasn't showing up on TA after I scanned.
I went to check my phone and when I go into the game it says I have 8/8 for 50G but when I go back to the games page it shows my profile with the gamerscore that I had when I last played my windows phone, which is like 800 G less.
In this article we speaks about How To Fix Xbox One Achievements Not Unlocking If you really do care about the idea of achievements and challenges on your Xbox One, then you must be aware of its significance in raising your score as well as claiming of rewards.
Then again, it is not about the increasing your game scores, but it is a way of keeping track of your experience.
I've decided to begin going back and trying to obtain 100% (or as close as I can get) on each Forza game to max out my Tier on this new profile.
Well, oddly, Forza 4 and Forza 6 Apex seem to be stuck.
This might be caused by a completed achievement, not appearing online after 72 hours because you don’t connect to Xbox Live.