@karenps I’ve had the same experience. I’ve tried a medical grade adhesive remover called Uni-Solve. They are individual foil packets of wipes soaked in product. When I’m changing the sensor I saturate the area with this stuff first and it helps. I also use over patches on the sensor. Once the over patch starts to loosen the sensor follows. Hope that helps. My brother and daughter both have this happen too. You aren’t alone. (When you change sensors do you switch to the other side? That allows the irritation to heal up before you have to use it again.)