In the print dialog: choose the Zebra printer, set Paper size to your label (or "Custom" with the same mm), Margins: None, Scale: 100%, and turn off headers & footers. If the printer driver offers a page size that matches, pick it — the page size here is set to exactly the label size in roll mode.
If text is cut off, reduce the font or inner margin. If labels drift on a roll, calibrate the printer (hold feed until it flashes twice) so it re-reads the gap between stickers.