This photo was rejected for technical issues. What's wrong with it?
Unfortunately, your image is of a too-small size to find out what technical issue is present. Though this comes under white balance, contrast and saturation.
However, you could alter the exposure and white balance a tiny amount. Make it just a wee bit more orange. Perhaps something like this:
Was this taken on a smartphone? Smartphone photos when enlarged tend to be smudged somewhat due to the noise suppression. It gives this kind of look. So, another rejection reason could be 'Artifacts' along with technical issues/image quality.