Clarification needed: AI images rejected for “Similar content” and “Quality issues”

Hi experts,

The attached images are AI-generated artworks created entirely by me. I did not use any real person’s image or any artwork created by someone else as a reference, and I also didn’t use anyone else’s prompt during the creation process. Additionally, I did not copy or even look at any titles or keywords from other creators’ images on Adobe Stock when adding metadata to my submissions — everything was written by me independently.

I’ve uploaded several other images in a similar style to Adobe Stock, and they are currently under review. Each image has a unique title, and none of them are duplicates.

However, one of the attached, which includes three vector-style images as part of a collection, was rejected as “Similar content in our collection,” while the other, which contains a single image, was rejected for “Quality issues.”

Could you please help me understand why these rejections occurred so I can improve my future submissions accordingly?

Thank you for your time and guidance!