A. The most common reason is that your labels are loaded in upside down. Please ensure your labels are properly loaded. The label that you peel off should be facing the ceiling when it comes out of the printer

B. Ensure your labels are “Direct Thermal” labels. If you are not sure whether you are using direct thermal label paper, you can scrape or burn the surface of the label to check if it will becomes black. If there is no change, it means that it is not thermal label paper. , You need to replace the
paper