Change Bolt 3 to MPH

Hi I am finding it impossible to change my new Bolt 3 to MPH.

All of the pages say to use the Element app, but that app is not compatible with the bolt 3!

The options is not available anywhere in the Wahoo app.

This is very frustrating, please let me know if you know the solution!

John, that is a horrible and vague answer.

I clearly stated in my question that I was using the Wahoo App as it is not compatible with the Element app.
Where is the setting in the Wahoo App?!?!?!