The channels I purchased were demonetized because the videos used to complete the watch hours contained 100% copyrighted content. Even though we later uploaded original content, YouTube refused to enable monetization because the watch hour completion videos were identified as copyright violating content.
We are very dissatisfied with the channels that were purchased.
I recently bought 3 channels from the seller, and almost all 3 channels got demonetized by YouTube. Our uploaded content was 100% original. However, the reason given for demonetization was that the videos used to complete the monetization watch hours were almost entirely copyrighted content.
The seller had clearly mentioned in every listing that there were no copyright issues, but almost all of the watch hour completion videos were flagged for copyright violations. Because of this, the 3 channels I recently purchased were demonetized, and even the appeal process did not work at all.