Reason: Your labels are loaded in upside down

Please ensure your labels are properly loaded. The print side is facing up. See the image below:


Reason②: Ensure your labels are "Direct Thermal" labels.

Reason: Try to print out test page.

Press the Feed Button (the top circular button) and hold it until blue light flashes 1 time, then release. Printer will print a test page. If test print looks good, please try to print your label again.