Thanks for the tag! Reused Content is not about Copyright (or permission, or fair use, etc) and is separate from YouTube’s Copyright enforcement – it’s part of the Content Quality section of YPP policies. More info and best practices here: https://yt.be/help/reused-content …
We've seen a few similar reports, we'll pass this along too. In the meantime, we’ve confirmed that your channel has several videos with reused content. You may reapply for YPP if you add significant value to your content. More info here: https://yt.be/help/reused-content …