I am afraid that none of the volunteers active in the community can help you here. This is something for Coda HQ to sort out. Questions about print (to PDF) have a long history and although small steps have been made, we are still waiting for the big step forward to reuse the content of our docs via a printed pdf or as a simple print.
Did you consider to reach out to support via the question markt down right to have them answer your question?
When playing a bit, I’ve found out that if I actually do a resize of the image in the original canva, it works ! but If I don’t resize, then it doesn’t work !
I’ve actually added another page where we can see the expected result !
In the first page coming from a formula :
Images can be cut in half
If no resize of the image the image is trying to set full size
In the second page where I’m using directly the canva :
Images are not cut in half, a page jump is created
If no resize, the image is correctly resizing itself !
I was going to play/propose playing with the image() formula with specific dimensions if the default didn’t work. But glad you figured it out yourself!