Exporting from PC Photoshop to iPad photoshop - quality issue
So I draw on my PC, but bought an iPad Pro to be able to draw on it mostly on the go. I had a piece that was 300 dpi/ppi saved to the cloud. Downloaded it, and finished the piece on my iPad. Download it onto PC. Then I take it to my sticker supplier who couldn't use the piece to make a sticker as the quality was apparently too low! (Which this was the only piece edited in any way on the iPad.) I had to change it to 600 dpi/ppi for it to work.
Is there a setting that is changing this, or is there always quality loss when you do this?