I'd like to add a couple of points to this thread:
1) Any time cookies are cleared or removed in your Browser, you will be logged out of most sites, even if you have the 'remember me' box checked. Once you log in again, a new cookie will be created for making logging in easier. If you have your browser set to not accept any cookies, then you will be needing to log in every time you visit FOTMD. Likewise, if you share your computer, the same thing will happen if other users clear browser cookies. Also, the cookie settings on your tablet or phone will be different than the ones on your desktop, so you can't expect the exact same behavior across your devices.
2) This site is set so that if you don't delete your cookies and have the login 'remember me' box checked, then that particular device will keep you logged in for a certain number of days, or perhaps as long as a couple of weeks. But it's not set to keep you logged in 'forever' (which is a good thing) ...so there will naturally be times every week or two where you WILL need to log in again when you visit. This is normal. I find that I myself must log in at least once a week, even though i visit several times a day.
The 'remember me' checkbox is convenient, but if cookies are cleared on your browser you will be logged out despite that. And the 'remember me' setting is only for a certain number of days, not 'forever'. If you have the remember me checkbox checked and you still have to log in every day, then the suspect cause is likely that your browser cookies are somehow being cleared or not being allowed.
Hope this helps!
Those irritated by grain of sand best avoid beach.
-Strumelia proverb c.1990
updated by @strumelia: 05/06/18 12:04:18PM