u/Luscombe11E

I have been flying with a Garmin 375 and 275 for about 18 months, but about two months ago I started getting terrain alerts when I take off and land at my home airport. I have not been able to turn it off. I was told that the alert should be automatically suppressed when landing and taking off at an airport (this airport is an established airport, so that is not an issue). Has anyone else had this problem and what did you do about it?