From looking at your file that you linked, it seems to me rather pixelated. As this is from a drone camera, despite the marketing behind it, when enlarged it does show signs of pixelation. I can't see any other issues although there may be.
If you clarify what the rejection reason was, it can make it easier to determine the issue. But, I think it may have to do with the artifacts rejection reason.
This is at 102%.
As this is for Adobe Stock and commercial usage, the quality has to be good as this could be used for printing to a large size.