using the xfinity NOW service, how do i change wifi passwords

I have the xfinity NOW internet service. How do I change my wifi passwords on this service. When I look at the wifi details on the xfinity app, there is no option to edit or change the settings.

I tried calling the 800 service phone number. The automated options asked if I wanted to use the automated chat service. When I declined I was disconnected.

When I tried the automated chat, the bot was completely unhelpful and I could not get a real person to take over the chat.

Can anyone help?

Thanks