The app cannot or does not remain connected to the printer.

If the printer appears within the app but you are unable to connect or remain connected to it, there is a potential issue with the Bluetooth module. Reset the printer’s Bluetooth connection, restart the app, and test the connection again. If the problem persists, contact customer service.

How to reset the printer’s Bluetooth connection:

  1. Turn on the printer;
  2. Open the paper tray cover;
  3. Press the power button three times;
  4. After about two seconds, the printer will beep four times, "beep beep beep beep", indicating a successful reset.