To change your broadband password you can login to the customer portal at https://customer.clara.net, once logged in on the left hand menu there is an option for “Password Change”.
Please remember if you change your Broadband password, you will also need to login to your router and update the password that the router uses to connect to the new password that you have set, if you do not do this, next time the router drops the internet connection it will not be able to reconnect as it will still be configured with the old password.