@KathleenMann101
Some Xfinity/Comcast routers are not configurable by the end-user. If you end up calling Xfinity/Comcast, explain to them that you need "legacy b mode enabled for your Roku streaming device and need modes b/g/n enabled as such".
Additionally, some Xfinity firmware GUI still have their Wireless Mode adjustment under their "Advanced" Settings. If you are not seeing an "Edit" feature, look under Advanced. If you are seeing an "Edit" feature but it is greyed out, then unfortunately, not user configurable.
Another route to try is to try using the Xfi mobile App. Some have found success by selecting "Forget device". Here you would forget the Roku device. Then try to establish a new connection. (would probably restart both the Roku and Router before selecting new connection).
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@DedeMarie29
What is your Roku model number, your router model number, and your ISP (internet provider). Also, what build is your Roku OS.
The Roku model number and OS can be found under Settings/Systems/About
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660, Premiere+ 3921, Express 4k+ 3941, Streambar 9102
