Hi @GUSTAVO5C79 ,
You did not state your question. However, if you are asking why this image was rejected it is because of the being underexposed and also covered with color noise.
Please zoom your photos to between 100 and 200% for inspection. Also color is the preferred contribution since they attract more sales and customers who wants black and white can do the conversion easily using a software.
Photographer and Author
Also of course stock photos must not have signatures, if this is what you submitted. Borders are not allowed either. Photos converted to greyscale are not often acecpted.
Please re-read the Content Requirements section in your Stock Contributor User Guide.