The labels have a special surface at each end that causes page to get caught up in the printer, and misfeed
The purpose of this special surface is to ensure label properly feeds, but if you have a paper tray it catches and drags the next sheet into the printer and causes a misfeed each time. I wasted about 100 pages before figuring out I had to load the paper tray one page at a time.
As Alanis Morisette would say - "Isn't it Ironic? Just a little toooo ironic."