Freestyle 2 sensors give me many problems, at some point from time to time, now one behind the other.I put them on, I start them with the mobile application, and they work well until suddenly any day tells me that the sensor does not work and that I have to replace it with a new one, it runs out before the 14 days and I have to startnew one.There is someone to pass and know why?In Abbott they send me a new one, but I have not been able to really help me to solve the problem, since what I want is that they work well and not have to be asking to be replaced constantly.