Hi Lima,
Just want to stop and welcome you to The PainterFactory!
I can't help you with the printing problem, but hopefully someone else can give you the answers you need.
Canvas > Resize:
If we open an existing image, Canvas > Resize displays the settings used when that image was created, until we change the settings for that image.
When we open a new Canvas, Canvas > Resize then displays the settings
used when the new Canvas was opened, or the last settings we apply to
that image.
In other words, if we want multiple images to have the same Canvas > Resize settings, we need to either open them all using those settings or adjust the settings to match.
Adjustments that need to be made outside of the Canvas > Resize dialog box:
If the dimensions are different for each (or one) of the multiple images we want to display the same settings in the Canvas > Resize dialog box, and do not have the same aspect ratio, we may need to either add pixels to the Canvas width or height or use the Crop tool to adjust the aspect ratio... before viewing the settings in the Canvas > Resize dialog box.