What is the rejection reason? Please also post one image at full resolution as detailed examination may be needed.
Please give the exact refusal reason. This is important so that we do not need to guess.
You may also look up the contributor documentation for more information about refusals. https://helpx.adobe.com/stock/contributor/user-guide.html?topic=/stock/contributor/morehelp/review.u...
I guess anyhow: technical issues.
I've looked into one picture and I saw multiple issues:
Foreground: missing detail, washed out colours.
All in all, they are great pictures for your private pleasure, but they are not fit to be used in stock.
Why? Buyers are very diverse. It may be that someone will buy the picture to be put as a small image in a journal. Great. Nobody will see the defects as long as you stay under a certain size. But if someone buys this for his wallpaper...he or she will be very disappointed.
Please read the documentation for image providers: 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
Colors need adjustment. Too much violet.