Originally Posted by Nucleonic
Ribbons are awarded and can be taken, the way the system works is you have to earn so many marks in any one category within a certain window of time for it to be kept. You may have missed the required amount of marks. It may be on a weekly basis or monthly, it's too new to know for sure. I've lost mine but it means nothing.
To clarify, it's based off the ratio of
Games: Average honor per game
Your ratio may have fallen off; but don't fret, most likely you are very close to the threshold to gain it again.