Sensors Reading errors

Hi guys, I'm new to the forum and diabetic for 3 years (I'm 29).I have been reading this topic because I am having problems with the last 3-4 sensors of the Freestyle Libre 2, when I have never had any problems with them.I just put on one from a different batch, let's see if that's what it is, if not, I would value what some colleagues are saying about changing it.For people who do not wear it on the back of the arm, is it annoying or cumbersome to wear it on the thighs, chest or buttocks?Do you sleep well?On a day-to-day basis, do you notice a difference with respect to your arm?

Thank you very much in advance.

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@JoseRamon no te rayes, muchos son fallos de fábrica, Abbott ha bajado la calidad y miden bastante por debajo de la glucemia real.  Dicho por mi endocrina. 

Yo los llevo desde hace 10 años en el glúteo y no me dan problemas de lectura. En el glúteo puede medir un poco por encima del valor real,  así que,  yo en mi caso compenso un poco.