The image does not meet the requirements.

 Pienso lo mismo, tambien reencuadraria esta demasiado a la derecha, pondria el motivo mas al centro

The depth of field and focus is not good and the right edge is too close.

The border is the immediate problem; however I think it's also a bit soft. Could you some sharpening and contrast improvement.

Read these links:

• https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html
• https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html
• https://helpx.adobe.com/stock/contributor/user-guide.html/stock/contributor/help/photography-illustrations.ug.html
• https://helpx.adobe.com/stock/how-to/tips-stock-image-acceptance.html

It's the border around your photo.  Remove it and resubmit. 

Good luck,

-Rob