Originally Posted by Segwin View Post (Source)
FYI - I use Steam and when I launch the app I have to sign into Steam each time (doesn't remember).
Behind the scenes the app uses Internet Explorer to display that login page. You may want to see if you have set additional privacy settings (or an adblocker) that prevents saving cookies in the browser. I don't have the Steam version, so can't really check this scenario. Additionally, you could try logging in with your Frontier account, see if that works?