What drone did you use? It’s not possible to asses the focusing on the attachment.
Was it rejected for technical reasons? It’s a great shot and has different points of interest for clients looking shots of rural America.
Did you shoot in raw format? Have you tried Topaz Labs tools? It’s a must have for stock shooters. If you don’t have it, don’t give up on the shot yet. DM, and we can try sharpening (if you shot it raw)
The image is too small to view the reason for rejection. Please post the original image to the community. If the file size is too large to post directly, you can use an external cloud service such as Google Drive.