Suggestions:
1. Make sure that you are allowing cookie exchange with the site (browser setting). We use cookies to keep you logged in at page changes.
2. Next time you login, tick the tiny "remember me" box on the login screen.
3. If that doesn't work look in your browser settings for stored password info. here's where it would be stored in chrome: chrome://settings/passwords You should see an option to:
Offer to save passwords. See if it's set to on and change if desired..