• Before printing, follow the printer manufacturer's instructions regarding the correct placement of label sheets. Depending on the printer, the sheets may be fed through the automatic, manual sheet feeder, or paper tray
• Use each label sheet only once to avoid any issues caused by labels that have already been removed
• Follow the printer manufacturer's instructions to properly adjust the settings for this type of paper
• Try the available printer settings to achieve the best possible print result

The official page of the product here.