Well with out knowing what the video is, or was is anyone's guess.
Given they mentioned qr code and your intentions to exploit their system through some form of unoriginal content, example:
Hi guys, it's Joe today we will be talking about qr codes, however did you know they were invented in #### yet the purpose of Qr codes were to simplify #### so what are your thoughts on it.
Unoriginal:
Hay there's a new item that landed check out the QR code now and be rewarded.
So if your video is between these two try again, but id avoid doing it again you've been flagged, but is there a real reason why you're approaching tiktok in that manner.