rejected for quality issue

Too small to comment.  We can't critique preview thumbnails.

Just because it was accepted by other microstock services does not mean it meets Adobe Stock's quality & technical standards.  Sorry.  Compare the full size image with other Adobe Stock inventory.  Is it as good or better than what's already represented? Adobe Stock customers expect the highest visual and technical quality for use in commercial projects.

Read your Stock Contributor's User Guide for more details on what's required.  

• 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

Better luck next time.

The answer is already in the image you are showing us. How do you want us to give you a diagnosis with a tiny thumbnail. Enlarge your image to 200% and you will find the answers you are looking for.

Share original full size file please. As you may know, Adobe's checkers will zoom in to 100%-200% to look for problems, so we must do the same...