Wow! The sensor I had inserted on Saturday evening stopped working today at 3:30 pm. I replaced the sensor and I’m waiting for the 2 hour warm up period to get finished. At least, I finally got an answer to how to know when the 2 hours starts before a person can calibrate twice. No one was really able to tell me in the past.
The old sensor kept having question marks and the numbers kept disappearing during the day. It finally stopped coming back. The new sensor is going to be here in a few days this week. Ae’ll see how this one goes this week.