Photo's rejected for technical issues.

Image moderators have very little time to check your picture. So the first error they find, they click a reason and that's it.  If you do not find out by yourself after carefully checking tge image, ask the community.

In this case, the framing is very bad and the bluish colour is not natural. 2 reasons to refuse the picture.

As Nancy suggested, you should do some reading. If you are new to stock, you should consider these resources: https://helpx.adobe.com/stock/contributor/tutorials.html
Please read the contributor user manual for more information on Adobe stock contributions: https://helpx.adobe.com/stock/contributor/user-guide.html
See here for rejection reasons: https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html
and especially quality and technical issues: https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html

For content to have commercial value, it must be high quality.  That begins with a good subject, good lighting, good composition and good photographic technique.  To be successful on Stock, you must learn what buyers want and shoot it the best way possible.   See link below for quality & technical issues that lead to rejection.

https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html