Hi KatiehB77,
When switching from USB to wireless, it is recommended that you run the setup of the PIXMA MG2920 again.
For more information regarding this procedure, please use the following link:
https://support.usa.canon.com/kb/index?page=content&id=ART165584
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
