1243: Noise and chromatic aberration:
1240: Chromatic aberration and blown out detail:
1236: chromatic aberration and out of focus.
In general, all your pictures are quite out of focus, and for some pictures mes I have difficulties in finding the focus point. Photographing into the sunlight represents a major challenge to the optics of your camera. It's very difficult to get pictures that have a correct contrast and free of optical errors.
You also have your ISO at 640, at least for one picture (the really noisy one) you had reserves to lower the ISO.
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