Printing and printer configurations are handled by your default PDF Viewer program (Adobe, Google Chrome, etc) and not within Scan123.
We recommend using Adobe Acrobat Reader DC (Free) as it provides a lot more option for printing. Adobe Acrobat Reader DC can be downloaded using this link HERE.
Attempting to rescale/resize and print a legal size contract onto a letter size document will either cut off parts or cause the print to appear very small. The best option is to use poster mode (Adobe) so the contract or long document gets printed onto two pages instead of fitting it all on one.
If you are using Adobe, please read their guides below to assist in printing long sheet documents onto letter size papers.