Try and reinstall all firmware. Make sure you calibrate well away from metal or concrete. If that does not clear the error: Reinstall the APP. If that doesnt clear it you have a Bottom Sensor thats too dirty or is Bad.
In the first part, she allows the Neo to follow her without the remote. The latter part, I am showing my granddaugter, Aubrey's mom, how to use "follow me" with the remote.
The stunning Ceannabeinne Beach, near Durness, NC 500, home to the Golden Eagle Zipwire(s)...
Guess who forgot they had a second line that wasn't very visible in the light, or from where I was standing... A close shave, but thankfully ok...