I've had a similar problem with Walgreen's pharmacy (not my usual place, but for a quick print for a relative, it works).


I sent them a few pics, and they also came out darker. Plus, the color temp seemed too warm.


I readjusted the color temp, brightened the image overall, then resubmitted them.


They came out even darker and the WB was unchanged.


Inconsistent results like this are puzzling.