This happens when the content is not centered within the app or the label is not calibrated within the printer. Use genuine label paper for best results.
Check to see if the content is aligned within the app. Click on any element within the field and click on “Align” to switch over to the alignment functions. The left half is for auto-alignment and the right half is for manual alignment.
To calibrate the label paper within the printer, pull the first label out so it protrudes from the printer when you close the paper tray cover. Press the power button two times to have the printer retract the label to the starting position. Try printing again.