This morning my ADSL connection stopped working for no apparent reason. In order to try and troubleshoot I tried to get into the router settings but ended up having to do a hard reset it as I didn't know the password to access it. I then managed to input the required settings based on the notes I took when I originally set it up three years ago, although I can't be absolutely sure that I got it right.
It's now giving me this message implying that I have entered the wrong user name and/or password:

The 2degrees broadband call centre have told me that the correct user name and password to use are exactly the same as my webmail user name and password. That's exactly what I'm using, yet I'm still getting the above message. They say that they can send a technician out but depending on the origin of the fault it could cost me up to $270.
I really don't know what to do now. Do I just accept the $270 liability? It feels like I may not have a choice.