On which platform do you play and how often have you tried it? Sometimes the server need a bit time to synchronize assignments with your profile and please keep in mind that you need to perform that task on a ranked server with the minimum amount of players to get score-ratings.
Cheers
Basti
Try it on an official server that's almost full. it has to be on Sunken Dragon, and you must be rank 10 or above. If you can't get it to activate, please contact an Electronic Arts Battlefield 4 technical support agent here: http://help.ea.com/en/contact-us/new/?product=battlefield-4
1) Pick the device you need help with.
2) Select the topic your problem falls under, and provide some more information on the issue.
3) Select 'Live Chat' or 'Call Me' depending on what is available, and what you would prefer.
