The temps finally got into the 60s, so I took my Vado 4.0 out for a short spin. I turned on the bike and the Mastermind display woke up -- but only partly. The round icon under the "V" in Vado (left side of display, about 1/3 of the way down) was on (green), but the "record ride" box next to it stayed grayed out. It doesn't respond to touch. What am I doing wrong?