bthomehub@btbroadband.com
you will prob have an @btinternet.com adress to but the hub doesnt use that.
Ring them.
EDIT – sorry didnt read your post properly. No idea how to set it up for a 3rd party router.
EDIT 2 –
They are VPI/VCI 0/38 & PPoA.
As a User Name use broadbanduser@btbroadband.com with no Password.