Hi.
I have an PWA with no login as well and it is the same for me. I have connected a shared database administrator applikation with users (they have a shared analytics page). As soon as there is any users the other analytics capabilities will start working (my experience)
There is really nothing to solve. The analytics function is dependent on subscribing users. So if it’s freely available - and no user registration takes place - well then all you have is the number of times the different screens have been visited.