Printing confusion

Can someone look at the attached jpg and suggest what I might be doing wrong. I hope it’s something simple and stupid that I’m misunderstanding
I select Rhino pdf > custom > input the size > choose the layout > set scale to 1:1
And I get nothing
Thanks for any advice you’ve got

Hello - do you see anything if you change the View and output scale to ‘Extents’?


Thanks for the reply
Nope, nothing changes

Hello - is there any combination that lets you see a preview and get something in the print?