BF2042: Masterkey unlocked on AK-24 but not showing in attachments

Hello. I have an issue with unlocking the underbarrel shotgun Masterkey in Battlefield 2042.

• I have made more than 360 kills with the AK-24.
• After the match I received the notification that Masterkey was unlocked.
• However, in the weapon menu (Collection → Weapons → AK-24 → Attachments → Underbarrel) the attachment does not appear as an option.
• I tried restarting the game, creating a new loadout, switching the “All Attachments” filter, and also ran Repair Game through the launcher — but the issue still persists.
• In-game, pressing the underbarrel switch key also does nothing.

It looks like a synchronization bug. Please help me manually activate the Masterkey underbarrel shotgun for the AK-24 on my account or provide a solution.

Thank you!