A correction from my Side!
I normally us Adobe Illustrator to create my artwork. (I also use adobe RGB as my colour profile) I use export for screens to export my artwork as a png. There is no way to embed a colour profile in the png.
If I open de .png file in Adobe Photoshop I need to retag the colour profile. In Photoshop I can use “Export as” to export my .png file. Now I have the option to embed a colour profile in my artwork.
As mentioned, the uploaded file has no embedded colour profile. (it’s made with adobe illustrator) Due to that missing profile it is possible that the print is washed out …
I will change my workflow and from now on tag every .png file in Adobe Photoshop. However if the printer add the missing profile (Adobe RGB or SRGB) the colour would also be better I think.
Isn’t it possible to warn for missing profiles?
I think I now need to check all my .png designs… I can’t replace the designs so this will be a giant task since I need to reupload everthing. Or… all missing profiles could be replaced by adobe RGB or SRGB