[BF 1] Codex trouble

If the achievement is not displayed despite being completed, it is possible that "a synchronization issue with the EA server is preventing it from being reflected." Please check your online status, and if that does not resolve the issue, try completing the achievement offline and then reconnecting to the online network to synchronize.

still need help

Hi, I reinstalled the game and replayed the chapter, but it didn't help.

Hello vlad5841​,

Reinstalling your game should resolve the issue, nothing much else can be done.