App keeps freezing

I had the same issue after updating in 6.12 and got it resolved this way.

I uninstalled the app first, to clear all geoid files from the memory. Then re-installed the app from the Play Store.
Went to Surveys > new > selected the vertical datum first - in my case NGF-IGN69 (RAF20).
The app warned that an extra download was required, which I accepted on clicking the Download button.
Then I selected the coordinates system, by selecting the projection only - in my case EPSG:3949. Some entries set both the projection and the height at the same time. I did select the projection only, as I already set the vertical datum in the previous step.
The app now allows me to collect a point. Clicking on the + sign does not freeze it anymore.

In my case I suspect that, when creating a new project without changing the preset coordinates system, which was good in theory, the app was trying to use the former geoid file but failed at it. The method above forces the app to download a new version of the geoid and somehow, makes it work.

Hope this helps.

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