I uploaded three designs that consist of text + a simple graphic. All three are the same except one has black text, one has white text, and one has black text + color accents. One design was approved, one was rejected, and the other is pending. That seems to indicate some sort of automated process has gone failed.
Based on the reply here Bad design contrast on some shirt colors I tried to upload an SVG file, but spreadshirt can’t read it. I tried another one and same issue. Both SVGs were created by Inkscape on Ubuntu, and both can be read by Inkscape, Pinta, and GiMP so I’m sure it’s a valid SVG file. What do I need to do to get Inkscape-created SVGs working with spreadshirt?