If your content was rejected with “QR codes are prohibited. Please only use simple designs to represent QR codes in content.”, it is most likely because:
A detailed QR code is depicted. Detailed QR code designs, whether functioning or inactive, are prohibited.
A QR code displays text or opens to a webpage.
Here are some examples of unacceptable QR codes:
Here are some examples of images that contain acceptable or generic QR Codes or Barcodes:
Image by bsd studio
Image by pinkomelet
We Recommend
Avoid, remove or obscure QR Codes from all products.
Only incorporate extermely simple QR code designs into your content. QR code designs that have the characteristics of a real, functioning QR codes will be rejected.
If you don’t understand the reason for the rejection of your images or if you need additional clarification, you can always contact contributor support.

