Do you see the text "This diagram requires 5 nights of sleep data" and get the same view as the picture below?
No worries; this doesn't mean you don't have premium access to the app. This simply means you need to track for a few nights to get an overview of your data in the statistics tab! The same thing goes for the journal tab, but that only requires one night!
If you don't have premium access, the text " Available to premium members" will be displayed instead. (See attached picture below)