Hello @MrAgos and thanks for reporting this!
There were quite some issues with challenges etc (attachments, weapons and more). To fix all of these, I think you better delete the game via Origin, then delete the SWBFII folders in your documents map and reinstall the game.
What this does: it resets your local files (which are probably causing this problem) while keeping your online progression. Single player data will be deleted though!
If that doesn't solve it, please have a read at these instructions here that will surely deal with this annoying issue!
Good luck!
