Imagens recusadas

The elephant has aliasing issues an some rendering issues, like here with the trunk: 

Your first is not correctly exposed as shows the histogram, the stem is out of focus and the water droplets look more like salt or sugar crystals.

You have aliasing, probably caused by upscaling and you have renering errors here shown with the whiskers:

I don't know if it's the reason for rejection, but none of the ones I've opened have an embedded RGB profile. They should be sRGB. The apple stem is poorly cropped. As for the others.

Were these machine-generated with AI?

What reason was given for the rejections?