If you have a barcode printer skipping labels this may help.
I found this guide on the web
- Load your Zebra printer with labels for your application. 
- Power on your Zebra printer. 
- Press and hold the Feed Button until it flashes two times, and then release it. 
- Allow your Zebra printer to complete feeding labels and printing a sensor profile. 
- Your Zebra printer should now be calibrated. To test – press the feed key and one label should be issued each time 
If you still are having trouble this is an additional help. https://youtu.be/OgjEE3frPQo?si=wHSGsTl-J-SQLj-D
