Karen Johanson Art review for Printful: Print on Demand

I submitted a scan of an original cyanotype that's been successfully and precisely color-matched on numerous apparel and paper products by another POD vendor, but the blue in my Printful sample gaiter turned out cobalt blue instead, and showed none of the gradations of the original image. (I have a photo that shows the huge discrepancy, but apparently can't post it here). The file was created according to file guidelines, using color profile sRGB IEC61966-2.1. Yet I was told the print result was "to be considered expected." I am removing the app: I can't use a vendor that can't even remotely match my submitted art.