First of all, I should check the following things.
- 1. Is your channel enabled for Monetization?
- 2. Are you able Monetize this video? (maybe there is a copyright claim)
If 1 is no, Then go to and enable monitization. (youtube-com /features)
If 2 is no, Then contact the the person who claimed the video if you have the rights to use the claimed material.
If you don't have rights to use the copyrighted material and you open a dispute you can get in some serouse trouble.
And if you have more question you should contact the freedom customer service.