Dear Simon,
As far as I know the menu to clear user data should be in the same place as always. That said, our settings menus are a bit confusing; we are currently working to make them more intuitive.
To clear user data on CommCare:
Log into your app, press the 3 dots in the upper right corner, select "Settings", press the 3 dots in the upper right corner again, select "Clear User Data" which should be the first entry in the drop down menu.
Please let me know if you are unable to find this menu entry.
--
Phillip Mates
Mobile Software Engineer at Dimagi