Not staying logged into my Xfinity Email account

I've been trying to figure out the past few days, now, why I've been redirected to xfinity.com/overview from Comcast.net. and why my login is not holding even when I selected the option to stay logged into my account? I've tried manually typing in "my.xfinity.com" to get to my own homepage instead of Xfinity overview homepage, but I have to log into my account every time, regardless.