The integrated PDF readers in Chrome and Firefox do not center the document. It is simply printed from the left. This means that the first letters and numbers are cut off. Also, with an A4 print, the layout is shifted and the labels on the right side are partially printed on the label on the left side.
Plese use the Adobe Acrobat Reader program (https://get.adobe.com/reader/?loc=en) or Microsoft Edge to display and print the labels.