Canon Pixma MG2522 printing coupons at wrong size (small)

Hello, I purchased this printer / scanner a couple months ago.  All was well until one day.  I usually use the printer to print grocery coupons out.  This time I tried printing one it printed at half the size.  I didn't change any settings....it just started printing out like this:  What do I do to make it the normal (large size) so I can use it at the grocery store?  Again, I didn't make any changes to it.  Don't know what to do.  My email is: [REMOVED per Forum Guidelines]

Hope to hear from you soon.

Sincerely,
Troy Leong