Technical Issue report

The pictures are really nice and in a photo competition I could imagine that they would get points.

But: unfortunately, for stock, you should deliver naturally looking pictures, without fancy filters and monochrome conversions.

First: In the histogram, you are missing the blacks, which gets you to that nice-looking appearance. Unfortunately, for stock, it is better to have a correctly exposed (processed) picture.

I also think that the saturation is too strong.

I would also photoshop out most of those reflections or at least correct the chromatic aberrations:

I would recommend to give up the programs, setting the camera in manual mode and shooting raw.

Second: I agree with @RALPH_L .

Third: Desaturated pictures are rarely accepted to the stock database. In addition, it's not really in focus.

Fourth: The histogram shows an underexposed picture:

In addition, it is undersaturated. The DOF could be better, but I doubt that this was the major refusal reason.

Last picture: This picture is bad, with most elements out of focus. In addition, there are many artefacts:

Blown out reflections and chromatic aberration:

The histogram shows also missing blacks.

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

I'll comment onbly on the second photo because I really like that one. 

This is what I see:

-- The photo white balance is too blue.

-- The photo is underexposed.

-- Highlights and shadows need to be adjusted to bring back details.

-- There is some chromatic abberation.