Ref: HYC198846 A QR code is just a more visual way of representing the address.The purpose of QR codes is to allow the easy reading of addresses. QR codes are meant for situations when it's not feasible to copy and paste the address - like when it's on a physical object like a card or poster. QR codes are also useful for mobile-to-mobile situations, when you don't want to share your contact information with the other person.
More details: Coinbase QR Scanner Not Working
