Canon TS8270 cannot find the router RBK50

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tsest wrote:

Router: RBK50

Firmware: V2.5.1.16

Canon printer: TS8270

 

2. Then I enable the access control and add MAC address of the printer in router, and then reboot the router. The printer can find the router. However, reboot again the router, the printer can't find again.

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The Canon TS8270 2.4G WiFi only supports channels 1-11.  Is there any chance that this Orbi is in a country that allows channels 12 & 13?

https://sg.canon/en/consumer/pixma-ts8270/specification?category=printing&subCategory=inkjet-printers 

If the Orbi 2.4 channel selection is set to "Auto" and it selects 12 or 13, this printer cannot find it.

The Orbi primary SSID and Guest SSID are both on the same WiFi channel.