I'm still using Seven+, and for a while had very few ???, and typically getting 14 days/sensor. But my last 3 sensors each had a couple 1-2 hour periods with ???, but worked ok once the readings came back.
This morning, on day 16 of current sensor, I again got ???. After 10-15 minutes, and because I did a meter test anyway, I decided to enter the BG reading on Dexcom. Within minutes, ??? disappeared, and the dexcom showed readings. Was this just a coincidence ? It's been working great since.
Has anyone else ever entered BG calibration when ??? was showing, and have it 'work' ? (Before today, I would just wait it out.)
For those using Gen4 - have you had more / less ??? on Gen4 compared to Seven+ ?