I can't seem to get this to work. I know there are other Canadians that have this feature, so it can't be geographic thing. I just picked up my Plaid and its on version 2021.40.6 while the mobile app is on version 4.3.0. I don't see the option to view the live camera under Sentry Mode option in the app.
The only thing I can think of is has something to do with the premium connectivity subscription requirement. I have a 1-year premium connectivity subscription (which was included with the purchase of the vehicle) but from the mobile app perspective, if I go to Upgrades -> Software Upgrades -> Subscribe, the Premium Connectivity selection for 13.99/mo is available for me to select. Its as if the app doesn't know that I already have the subscription.
I wonder if Tesla coded their iOS mobile app to omit enabling this feature/option, when the premimum connectivity shows as an item that still needs to be purchased, even though a 1-year complimentary subscription was provided.
It's a wild theory, but knowing Tesla, it might make sense as why some of us who recently purchased the vehicles aren't seeing it.