If those symbols are grey then your video isn't monetized. You can enable it manually, if you can't monetize it then you probably have third party content like music or something else in the video wich is why you can't.
Well, I got the grey symbol on vids I WAS get money for and the latest ones I have uploaded didn't get a claim...[DOUBLEPOST=1444947506][/DOUBLEPOST]Anyone else can help me?