Internet username+password

Hi

Due to the trouble I'm having with the provided Huawei HG633 router, I am thinking about reconnecting my previous router, a NetGear D7800.

I've noticed in the internet settings of the HG633, the internet login username is 01warehouse.talktalk.net. Previously I have always set up my routers with [my-phone-no].talktalk.net and my own password.

Will I need to configure the netgear with the 01warehouse login, and if so, what do I need to put in for the password.

Many thanks

Paul