For those that didn't know...
If you use the login on the left, just asking for username and password consider doing this, keep it defaulted on "forever" and logon.
Using the login feature at the top of the page too.
Put in your USERNAME & PASSWORD.
Then where it says underneath "minutes to be logged in", it's defaulted on "60" (minutes). You can change it to whatever and it won't log you out automatically until then. Put in 9999.

Whether it says "forever" or "60" or "9999", once you log out voluntarily you're logged out, period. This was just in case you found you were getting logged out and didn't know why.
