I recently got a new router, hence new username & password. When I try to log in on laptop(Mac) it is asking for a wpa2 pasword. Did I have to set that up? And if I did,where do i find it now or how do i reset it?
It's your WiFi security / network key / password;
"If you are using a Comcast supplied gateway device, and if it hasn't been changed from its default value, it is on a label on the bottom, back, or the side. It may be called the "Password" or the "Network Key" on that label."