The solution is as follows: 1. After opening the cover, adjust the end of the paper roll to the center position to improve the situation. 2. You can also close the cover and press the paper feed button 2-3 times, and the printer will adjust the printing paper to the center position.

Double-click the power button to print a self-test page. Check whether the self-test page shows receipt mode or label mode. You can only connect to the NIIMBOT APP in label mode. If it is not in label mode, please quad-click the power button to switch.