: If using the Bluetooth version (BL model), the default pairing code is typically 0000 or 1234 .
: This usually indicates the printer is out of paper or the cover is not closed correctly. Ensure the labels are facing up.
: Download the dedicated Receipt/Label Driver for MAC from the Zijiang support portal.
: Open the driver settings and adjust the Darkness or Density (found under Print Options) to a higher value.
: Search for apps like "DLabel" or "Print Label" on the Google Play Store or Apple App Store . Installation Guide for Windows