Xbox one achievements missing from gamertag

I've lost around 14k gamerscore, my achievements app won't load on my xbox one yet recent achievements still show in the acrivity feed. I can even snap achievements and it shows my unlocked once but if i select full screen it won't open. Did chat support,
deleted and redownloaded profile, no joy, so i was asked by support to post here. Also i was playing AC Liberation on the 360, 5 achievements unlocked for me but my profile says only 1 has (despite having 5 achievement tiles underneath it) help!?

:)

 

Extinction: achievement run

Hi all,

I'm only missing the "complete all challenges" achievement on Extinction for the Xbox one. Is anyone up to the challenge?

I'll help back with any missing achievement, I usually play during weekends (UK time, GMT + 2), my gamertag is:

Feel free to add me and send me a pm so I know where you come from!

 

Transfer of Xbox 360 achievement score to Xbox One

Hi there,

are you missing some achievements as score or missing everything from the 360?

When I look at your profile on xbox.com it shows both xbox one and 360 achievements and score.

 

Seems to have sorted itself out, cheers

 

Hey there Rich! I'm glad to hear things look sorted!

If you ever encounter any other issues, please feel encouraged to post again!

Game on! =)

 

how was it fixed ? I am having the same issue