@thisispeak wrote:
Hi Dieter (?),
Ultimately only Adobe Stock will know the answer to your question but having looked quickly, my thoughts*:
1. The images are sharp/in focus but (and this might be what a previous respondent might have meant, rather than out of focus) the extremely shallow depth of field, which we of course expect with a close-up, might not place the areas of critical focus in the best place, in the eye's of the reviewer. So, it might be a case of moving the focus, stopping down to increase depth of field and using hyperfocal distance to best effect or of course using focus stacking.
No, when I say "out of focus" I mean "out of focus".

The focussing problems may be caused by focus stacking.
"Dieter" sounds German or German speaking, so yes, the translation theory may be true.
3) Commercial appeal is a different refusal. That is probably not the case here.