Normally a cookie is saved in your PC and this authenticates you each time without displaying the login screen. If your browser cache is cleared or your IP address changes, this may be enough for the website to trigger that you may not be the same person, so it asks to verify. These cookies often have shortish expiries that get refreshed each login. Or logging on from a different device may trigger it.
Websites vary as to what triggers the re-authentication. Sometimes there may be a security update as well. Do you tick the Remember Me box when logging in? That is what saves the cookie on your PC. It is remembered by your PC, not the website.
-- Edited by Are We Lost on Wednesday 1st of April 2026 05:13:59 PM