This morning (2:30 am), I was woken up by the fixed low alarm going off. The good thing was, it was extremely off from my actual blood sugar (245 mg/dl). When I tried to recalibrate, my receiver refused to accept the new number. The number on the receiver was 45->!
I went back to sleep for a few hours and then got back up at 6:30 am and was able to calibrate at breakfast.
During the day at my job, there was a lot of stress. This happened around 12 noon.
I inserted the new sensor before dinner tonight. So far, so good.😀👍