Posted same experience on Reddit Rivian forum.
I have searched and have yet to see someone with similar problem. My Rivian thinks it's -40 degrees outside of the car. Today is actually probably one of the hotest day of the year at 90 degrees. Does not seem to affect anything in the car...
I know Rivian said no wristband in shop a couple months ago. Maybe it hasn't been updated, but it shows as "Coming Soon to Adventure Shop" when it talks about the wristband key.