What to do if the Xiaomi Portable Photo Printer 1S prompts to use original photo paper?

If the printer prompts you to use original photo paper, it means that the inserted photo paper or Smart Sheet is not recognized as official consumables.
To resolve this, ensure that you are using the correct orange Smart Sheet that came with the current pack of photo paper. Put it into the bottom of the paper slot, beneath the photo paper, and try printing again. The Smart Sheet is essential for calibrating the printer. Make sure the orange Smart Sheet is placed at the very bottom with its barcode facing down. Using non-original or incompatible photo paper can cause print quality issues.