purchased but still in demo mode

Running on Acer tablet with Windows 10.

The App title says Windows10 Beta. When I open the app it says v0.12.1. I don't know which Beta version this is.

Purchased Windows10 Beta in app store today, but still has the beta version timer and option to purchase the app on the start screen.

I have tried uninstalling and reinstalling as well as PC reboots several times and it hasn't helped.