just started using a Dexcom 7+ two weeks ago and got the error code "???" after inserting a new sensor. Spoke to our Hot-line in Germany but unfortunately they were not able to supply a satisfactory answer. We have very little experience here in Germany as the Dexcom became available around February this year so it is still pretty new this side.
I stopped the freshly inserted sensor and did a restart. After 2 hours I calibrated and since then it’s be up and running. The reason for inserting a new sensor after such a short period of usage (6 days for the first sensor) was the fact that the display froze on my receiver and I was not able to calibrate or see my values at all. The receiver however still gave all alarm signals but I could not cancel them or change them.
Is there someone out there that has experienced the same sort of hassles that I’ve had?
Due to the fact that I'm renting the Dexcom for a two month period to gain experience and have limited sensors (4 only) I I would appreciate any feedback what so ever.