Envelope printing - vertical center

Trying to print an envelope with writer 24.2.5.2 on either Windoz 11 or Fedora 42 (same results). Setting it up is easy, To, From, size, etc. My printer (HP 400 color) wants envelopes vertical and centered from top, which I do. Preview looks ok size wise, its normal horizontal for viewing. No matter what I do, it won’t print vertically. I have Office on another windoz machine and it prints vertically just fine.

What am I missing? I would like to get to all Linux but not being able to print envelopes is a show stopper.

Are you using Inset > Envelope?

Maybe try with an envelope sized paper.
DL_EnvelopeForMailMerge.odt (25.8 KB)

Yes, insert → envelope. Fill out details, format, & printer info. Insert or new document. Somehow I get a second blank page after the nice formatted envelops page. I can delete the second blank page with no issues. Attaching pic of the steps. Tried the ODT you attached, it crashed my Writer. It is making a report now. Tried on a second machine.