The last thing anyone should do is berate or belittle anyone asking for help when this forum is supposed to be a community of individuals with a shared interest.
Bluetooth range widely varies. The one in my laptop has a 300-350ft range and doesn't lose connection to my board anywhere on the acre where I normally ride.
A simple hands on test confirmed that the riding mode can be changed while the Onewheel is being ridden so long as you are going slow. That's with both the Onewheel and OWheelBuddy apps.
It took less than 15 minutes of really trying, but severe kickback with an error requiring that the board be reset was experienced.
Recreating the event required a combination of changing the forward and backwards direction, a rapid change in contact status with the pressure sensitive pad(s), and a changing of the modes intuitively from "classic" to "elevated."
Shame on all who exhibited such childish behavior towards an individual seeking help. Be sure you look both ways when crossing the street.