There is everything OK. The High Flow sensor has no configuration menus in the main tab. You can see the current flow rate in the alarm configuration tab or as flow sensor X in the sensor tab if you use it together with an aquaero via aquabus.
The sensor should have also created an new overview page where you can see the flow rate. Easiest way to get it again: disconnect USB, remove the dead menu entry for the sensor and connect the sensor via USB again. It will set up the overview page automatically.
Thx Sven