Why do I keep getting logged out?

I have been here about 4 years. All has been well until a few days ago. Now I am logged out every time I come here. (yes, I check the "keep me logged in" box)

A week ago I changed from firefox to Edge. It didn't work out and I changed back. The problems started when I changed back, but that may have been a coincidence.

Any suggestions?

Clear your cookies... any time I have issues with this site (and this site has presented some unique problems over the years), clearing cookies resolved it.

That worked. Thanks