What a nightmare morning. Sensor still had 5 days to run so would have been attaching new sensor in a couple of days. Working fine last night. Scanned at 4.3 pre bed (stab had me at 4.5). Went to scan this morning and it seemed to have committed suicide! Message that it had run out and attach a new sensor. Fixed a new sensor and started the activation countdown. Removed the early suicide sensor and noticed there was blood on the back again. New sensor started up and delivered 3 scans before it just dropped off. My arm was bleeding from where the filament had been and the backing was not very sticky. Not a lot I could do other than apply yet another sensor my 3rd for the morning!
Having applied yet another sensor , I scanned it to start up, it asked if I wanted to start another sensor, pressed Yes and it took me to the help page 'how to scan a sensor'. I paged through it, backed out of help and scanned the sensor and again it asked do you want to start a new sensor and again it took me to the help page. 5 mins later I was still going around in circles and I'd tried loads of things, turning mobile off and on, restart, NFC off and on......to cut a long story short it still thought No 2 sensor was active. I eventually discovered that when it took me to the help page 'how to scan a sensor' I had to scan the new sensor while I was on the help page. That then cancelled sensor 2 and started sensor 3 on the 1 hr warm up. It's working fine and is well taped down with Tegaderm.
Both of the other errant sensors have been reported to Abbott and replacements requested.