hello community, do you have any idea why these pictures were rejected? Thanks for your help!

Adobe gave you a rejection reason.  Technical quality, Property violation, etc...

• https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html
• https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html
• https://helpx.adobe.com/stock/contributor/user-guide.html/stock/contributor/help/photography-illustrations.ug.html
• https://helpx.adobe.com/stock/how-to/tips-stock-image-acceptance.html
• Model/Property Releases:
  https://helpx.adobe.com/stock/contributor/help/model-release.html
  https://helpx.adobe.com/stock/contributor/help/property-release.html
  
  

I'm not sure about all zoos, but the ones in my region have commercial photography restrictions. You can take personal pictures to hang on your wall, but you can't sell the images commercially without the zoo's written permission.  That's why they have gift shops. 🤑

Interesting, than you guys!

I have an idea: quality issues. Maybe also IP issues, as Pandas are not available in the wild to be photographed. 

If now, you would also post the pictures here in the same quality and size as submitted, someone can check them and tell you samo of the issues with the assets.

The Panda will probably not be allowed. IP release is required from China. All Pandas are property of China.

These are too small. Rejections can be the result of very small errors. Please upload the images at the size originally submitted.