The Pixma MX922 will only connect to 2.4ghz WIFI. If your router only sends 5ghz WIFI, then you will need to get a dual signal WIFI router. That should fix the issue.
I am having the same problem. I called Canon for technical support and they told me that the MX922 printer can only connect through 2.4ghz wifi. And it turns out that my router (which is pretty old) is having problems sending the 2.4ghz signal. So...
