I have no problems running Steam directly as a program. But whenever I try to login through my browser it tells me that I'm either logging in through a different pc or using a different browser. So they send me an email with a code which I have to input, and only then I can login. The issue is that this didn't happen just once, but every time I try to login through my browser. Even if I do it on the same day. Obviously I'm using the same pc and the same browser... Should I be worried, or perhaps this happens because my cookies get deleted or something?