Unclear printouts may be due to the following reasons. Please check and troubleshoot one by one: 1. Try pressing the power button to feed one sheet of paper and then print again. 2. The print head is contaminated. Refer to the product manual for print head cleaning instructions. 3. The print roller is too dirty or damaged. Refer to the product manual for print roller cleaning and replacement instructions. 4. Double-click the power button to print a self-test page. Take a photo of the self-test page and send it to NIIMBOT customer service for assistance. 5. Please check if you are using genuine NIIMBOT label paper. We recommend using genuine NIIMBOT label paper. 6. If the problem persists after checking the above, please contact our online customer service below for assistance.

1. Try restarting the printer or the mobile app to reconnect. 2. Try turning your phone's Bluetooth off and then on again. 3. If the problem persists after trying the above, please contact NIIMBOT's official customer service for assistance.

If no printer is found, the following situations may occur. Please check the following one by one: 1. Please check if the printer is powered on normally. 2. The device connection limit has been reached. Try disconnecting other devices from the Bluetooth connection and searching for and connecting to the printer again. 3. Please confirm that your phone's Bluetooth function is enabled. If Bluetooth is enabled, please search for and connect via Bluetooth within the app. 4. Try closing and reopening the app to search for and connect via Bluetooth. 5. If the problem persists after ruling out the above situations, please contact the online customer service below for assistance.