KDE - printer et-3850 - print option duplex error and draft mode

From the epson website I installed the linux et-3850 driver.
https://support.epson.net/linux/Printer/LSB_distribution_pages/en/escpr2.php

Yast → printers → set driver → et3850 -->set options → duplex off → click ok
Print one or two pages - test duplexmode – > print two pages

Print successful

Duplex on - short side

Printed on one side then the other. Print successful.

Click ok —> exit to yast menu.

Load libre office odt document

Print document – print options:
grey scale
duplex short side

Result two pages from 1-2, #1 on top

n1 - print showing
n2 - print on backside of page.

Duplex mode is printing two pages, only in app, but not in Yast. Splitting the one page into two.

Also, I can’t tell which print option is the draft mode, so I use the default. Which option is draft mode?

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