Facebook might automatically remove or mute videos they deem to contain copyrighted music or videos.
If you have purchased a license at https://soothingrelaxation.com and you have followed the terms of the agreement, you should dispute this claim.
In many cases, you can dispute the claim directly on the video. If this isn't possible, you can issue a counter claim on Facebook using this form (stating that you have purchased a license and providing your order confirmation number): Filing a DMCA Counter-Notification
If this doesn't work, please contact us and we'll look into it.