On Monday, July 23, 2018 at 2:22:39 PM UTC-4, wrote:
In my 10 year old home I am having trouble with a couple GFCI
receptacles. But I think the problem is probably with every one in the
house, as they are all the same age and brand.

GFCI devices have a service life of about ten (10) years in a dry location, and anywhere from 2-5 years in a damp location. In many cases, their effectiveness as a ground-fault devices is long-gone, whereas they will still function (somewhat) as a normal breaker. There are exceptions - see monthly test below.

Yes, DO test them every month as suggested.
YES, DO replace them IMMEDIATELY the moment they display any sort of wonkiness.

FULL STOP.

Peter Wieck
Melrose Park, PA