Invoice number not printing on pdf

Hello,
After I submit the invoice for approval, the invoice image that shows on my screen looks good. It has “INVOICE” in a gray box at the top right corner with the invoice number next to it in bold print.

However, when I export as PDF: “INVOICE” prints much larger to the immediate right of my logo. No gray box. No invoice number.
Via the link: invoice number shows as “1”, not the assigned invoice number.

Any help would be much appreciated!