Hi jbs7362,
There are many reasons why your PIXMA TR8622a would not connect to your Wi-Fi. Because of this, for a quicker resolution to this issue, it is recommended that you ontact one of Canon's Technical Support Representatives via phone or chat. To contact a Technical Support Representative, please use the link below to log into your My Canon account:
https://mycanon.usa.canon.com
Once logged in, click on your product and then click on the Product Support button. When that page loads, click on either the Phone Support button or the Chat Support button to access support.
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