I received my M Series A FLEX Machine (A FLEX on receipt) yesterday. During the setup, C-FLEX shows up on the menu. How do I select A FLEX? I tried all of the possible options/buttons but I cannot get it to change.
Being stuck with C-FLEX, I used setting 1 last night and found the pressure too hard making it uncomfortable exhaling. I hope the A FLEX setting will be better (if I can select it).
Help!
Thanks,
Alan