I've just found this thread, so perhaps it's worth repeating what I said on another thread.
I've been using the Libre2 since it came out, and am very impressed with it, although there is one problem that keeps repeating, which is that it keeps alarming to tell me it's lost contact with the sensor. I'm sure I read that it would read the sensor up to 20 meters away, but sometimes it seems to lose contact when it's in my shirt pocket less than ½ meter away!