Won't print to fit - too small

have defined print range for printing on A5 paper. Used to work fine. Now printing choosing option ‘fit print range to width/height’ results in contents of page fitting vertically but so narrow on the width that the print is too small to read. What am I doing wrong?! Thanks

Play with the number pages for width/height or/and in Page tab change the orientation.

Edited.

Remember that page break only works with scale mode.

Thanks for the suggestions. Unfortunately, they did not work!

SBV