Not grocery receipts, but extra long shipping receipts.. When I first started doing shipping shops, the receipts were too long for the phone camera capabilities. I was told by a scheduler to cut the receipts in half and take the picture of the pieces next to each other.
A few years later, a scheduler suggested that I could take a pic of the top half and a separate pic of the bottom half, and upload 2 pics, and it would be fine as long as the editors could see the entire receipt.
Then, about a year before the shop went to a the new MSC, I got in trouble because it "clearly says in the guidelines" that the entire receipt has to be in one pic. But phone cameras have advanced a LOT, and their receipts were marginally shorter, I could take perfectly clear readable pictures of whole receipts.
As far as their software and or lack of technical abilities, I can't really expect an editor that can't read a 24 hour clock to understand how to zoom in on a picture..