I don't really know anything about Xfinity other than my stepdad haves control and by turning it off I mean where it says "sign in to network"

I have Xfinity wifi. The company SUCKS they are sooo greedy, and they are the only wifi provider.

Basically, it's Xfinity wifi, protective and fast, new company, and it haves it's own app to turn it off, search it up

That's not really how VPN works. Also I dont think it is possible to turn off the wifi with a app. Possibly with a old router with bad security but if you could turn of wifi with just a app that would be a major security flaw