I got an email from Mozilla regarding this extension

"Hello,

Thank you for your report about the following add-on on Mozilla Add-ons: Video DownloadHelper.

We reviewed your report and the content in question, and found that it violates Mozilla's policies, and have therefore requested the developer make changes. If they do not update their content to correct the violation, we will remove it."

One star for having to use a third party program to have to download, and then he pulled the rug on everyone and put a big QR code in the videos saying you have to buy it now, it's a scam.