Since the last update my readings have been having a lot of problems. The sensors last 10 days, mine stopped reading after 8 so I had to change my sensor because I have a lot of complications that make me more prone to seizures. I changed the sensor and it still wouldn't read. I had to delete and re-download the app. Finally after an hour of it being fussy it started working. Last night I get a notification my sensor expires today even though it was brand new. Ive not had a single reading today.