Hi,
if i sign in through Steam to dispenser.tf everything works fine, but after restarting my browser (tryed firefox and chrome) im no longer logged in.

How can i stay logged in through Steam?

Thanks for any answers.

Because hijacking a dispenser.tf session can actually involve a lot of money, it is intended behavior to reduce the chance of accidental dispenser.tf session hijacking in the cases like logging in with public computer, lending laptop to friends, or even stolen laptops.