Draytek 2750 Connection Problem to BT Infinity

[Scream]

I installed a Draytek 2750 for BT Infinity in an office a few years ago and it has been solid. A number of weeks ago the office staff couldn't get internet so they changed over to the bt home hub and modem and they were up and working again.

I am only getting round to looking at it and I just can't get it to connect to infinity. I reset it and even upgraded the firmware but still no joy.

I first thought bt might have changed something so a setting in the router needs modified but I put that idea off since the old bt home hub works.

What's the chances something has packed up with the modem in this router?

Cheers

 

[Scream]

I have it home here and still not working. Can someone confirm what username/password you can use to log into bt infinity?

The office was on business infinity and a supplied username/password was supplied.