Originally Posted by C&G in FL
Could be the settings on your device. If you clear history or cookies you may have to log in again.
You do indeed have to log in again whenever the cookies are cleared.
But, I, too, have the problem of opening a new tab while leaving the current "logged-in" tab open (for escape trailer owners forum), then when I return to this forum tab, I am logged out. There must be a "lack of activity" timer function, that logs you out automatically.
It's just a minor nuisance, so I haven't researched it.
Oh, and it does log you out if you type too long a message without saving or posting.