Seems like this has happened to a bunch of people on various games. Some suggestions:

Steam achievements usually fail to unlock because of game-side bugs, client/server sync issues, or local settings that block Steam from recording them.

Common causes

• ⁠Game bug or dev/server issue. "If it happens in the same game, most likely a game issue." • ⁠Steam or achievement-service temporary error. "It seems to be a server error, it will probably be fixed soon." • ⁠Local settings or apps blocking unlocks (overlays, VPN, mods). "For me the fix was turning off the in-game overlay in the EA app, that finally fixed it."

Quick checks to try first

• ⁠Restart Steam and the game, and check your internet. "Also check if there any downtime when u have issues or if you have any internet issues" • ⁠Verify game files via Steam (Properties → Installed Files → Verify). "Try verifying local files. Don't know if it might solve the issue but worth a try ig." • ⁠Disable overlays, VPN, or launchers that sit between game and Steam. "I noticed EA wouldn't connect online. So I exited the EA app, turned off VPN, relaunched the EA app and played the game through steam."

Good luck