Mesmark is correct, the site is set up to just allow printing, not saving. I've had problems with theft and redistribution of my patterns, so I try to keep the printing happening just here on the site.
As long as your account is active (and membership periods last for 9 months) you can come back here, any time of day or night, and print as many as you want... even multiple copies of the same pattern, if you wish.
As for resizing, you can do as others have suggested, either resizing with a copy machine or scanning the printed patterns with a home scanner and resizing with some graphics software.
Although, you should also be able to resize right at the moment of printing by choosing a percentage in the printer dialog box that pops up right before the image goes to the printer.
For my printer, I think the settings for scaling are under Properties > Advanced, but it may be different for your printer.