@gp-se If you don't have Pods installed, you should still have control over channels and other Wi-Fi settings through the Ignite WiFi Hub. You can also request that Rogers disable the Ignite WiFi Hub on the account. They may or may not do this anymore but it does not hurt to ask.
Using the 10.0.0.1 UI, I clearly (and recently) was able to set my 5 GHz band to "Channel Selection: Manual" and choose a channel (157).
I see that the same page no longer allows changes ("Wi-Fi Mode, Security Mode, Channel Selection, Channel Mode, and Channel Bandwidth are being managed automatically to help optimize your home Wi-Fi network and improve Wi-Fi coverage") and that the Ignite WiFi app and web page do not expose this functionality either.
So I'm stuck on Manual/157, which was just a whim/experiment. I suspect Auto would be a better choice.