What resolution should the Gig image be? I uploaded one at 2896X1892 300DPI and it was rejected saying it has to be better resolution. I have sold images with the same resolution as full page spreads in magazines.
Try dimensions 682px x 462px at any resolution (72dpi should be fine). This is what all my gig pics are - and they work fine.
I lowered the resolution to their recommended and it went through. The email was confusing since It stated that I need to increase the resolution.