Design won't be placed on sleave

Hello, I am trying to place this logo on the sleeve of a premium T-Shirt but every time I try it doesn’t work or provide a reason. It works everywhere else on the front and back though!? I can’t get anything to work on the sleeve. Please help!

*THE DESIGN LOOKS A LOT DIFFERENT IN THE FORM VIEW THAN IT REALLY IS! Its a PNG with a transparent background

Hey @User_NA-19011d8b,

on the sleeves we only suport vectorfiles. PNG-files wont be accepted as the printing method for the sides need a vector-file.