If you are using a Munbyn label printer and find that your labels are shifting the label, sometimes with a blank label following try the following solution below.
Go to the Start Menu and open the Control Panel, select "Devices and Printers".
Then, right-click your Munbyn printer and select "Printing Preferences".
Select “Settings”. Change the Width to 103 and the Height to 153.
Select "Apply", then click "OK". Refresh your browser and retry printing the label.