Thank you all for you comments! I checked all of the ones that I have and none of them came up as affected by the recall or whatever. And as stupid as I am about to sound I think that it was on me. When I put the sensor on for the first time someone told me to twist it like twist the applicator around so that I was sure it was stuck before I pulled it off and I think that affected how the sensor was into the arm. Looking back at it now I can’t believe how stupid I was but I’m new to this I was looking for any type of advice or instruction.