When starting the app for the first time it asks for some permissions (location service and camera). Both were granted. However, the next message box was a warning that the device isn’t equipped with a LiDAR sensor and hence it wouldn’t be used.
This is not true, the device is an IPad Pro 12,9" 4th Generation running iOS 13.4.
The app itself is running fine so far (without the LiDAR features, of course).