Hi isabelholmes,
What are you attempting to print from, a mobile device or a computer?
If you are attmepting to print from a mobile device, are you using an iPad or iPhone or an Android device?
If you are attempting to print from a computer, are you using Windows or Mac?
What version of Windows or OS X is installed on your computer?
Please note, Canon's Forum is not intended for immediate help, but a place to allow for the Community to give you assistance and feedback. If this is an urgent support need, please use the link below to reach our friendly Technical Support Team:
http://www.usa.canon.com/cusa/consumer/standard_display/contact_us_consumer