Welcome to the Community, @mattdunne
Just to be sure, have you tried all the steps recommended in this thread so far, including updating your app and trying this via the browser version of My BT?
Peter
Hi Peter, thankyou for your reply.
Yes I have tried many times, uninstalling, re loading the app.
I believe the problem stems from a few weeks ago when my account was under review and subsequently approved for another year on a reduced tariff.
The master is complicated further by another account I had in the past which was used to purchase NOW TV Monthly subscriptions.