Reason of reject

DSC_8578 kopie - kopie.jpg:

Add sharpening, except for the sky.

Lower exposure for the lighted areas, add exposure (lift the shadows) in the shadowy areas.

The white rock and the town are overexposed in the sunlight.

You have a certain amount of noise.

DSC_8543 kopie.jpg

You have the same problems in the light areas with the white rock. I agree with @Jill_C on the white balance.  And I see a certain amount of noise. Add sharpening to the rocks, noise reduction to the sky.

DSC_8543 kopie.jpg: idem, except that here the white balance is OK.

Photograph at a lower ISO, that gives you better control on the noise. If you take pictures of something that is so abundantly white and in the sun, your pictures risk overexposure. I do bracketing in a lot of the cases, selecting the best exposure at home. This is the way professionals get the correct exposure … 😄 for such subjects.

You tell us, why it got refused. Adobe did tell you, we would like to get the heading.

DSC_8578 kopie - kopie.jpg - focus is bit soft, shadows could be lightened a bit and highlights reduced. The blurry bush in foreground is distracting. 
DSC_8543 kopie.jpg  - similar issues with focus and slightly overexposed highlights. White balance is a bit too blue.

• DSC_8572 kopie - kopie.jpg - also overexposed and softly focused.