jennyr30080450 wrote
Yes, it's a screen print to the printing company. Yes, they actually print blue/gray. But they are fine until sent to print.
I'm sorry, I don't understand if the issue is what you see uploading or the actual prints. OR both.
IF uploading, ignore that preview, probably not color managed.
IF it's the print, then I suspect you're uploading something in the wrong color space depending on the lab. IF they demand sRGB, and you upload something other than sRGB, that could be the issue in both cases.