This issue has been occurring with some IQ apps for a few months. For example, with the "My Edge 2" "Power Bike" app, an exclamation point appears on the screen where I entered this data field and it stops recording the additional data field.
I have installed and uninstalled many times, I have made updates but the problem persists. The historic reliability of these products (Edge) is fading!

while the screen was displaying (!) it did not register. I clicked to re-enter the IQ app and it started recording again.