Sorry to hear you're having problems logging out.
The logout works by deleteing your browser cookie, which means it's browser specific. So for instance if you are logged in on desktop and mobile, and you log out on desktop, you won't automatically be logged out on mobile as well. In a similar way, if you are using two browsers on desktop, if you log out on one you won't automatically be logged out on the other.
Could this be what's happening here?
3 years