If you only have freeview and want to subscribe, their signup is not great. We upgraded the broadband last week and selected to subscribe. After initially selecting this, at no point does BTY tell you that you have got it. You go round and round the site and it keeps saying "You need a BT ID to subscribe, dont have one? Get your BT ID here." We had a BT ID, but it would not let us progress.
Needless to say it was very frustrating. Finally (thought) we had it sorted and I logged on last night and no joy, it said we hadnt subscribed. The missus just emailed them at lunch and the said they would turn it on for us. Hopefully, that'll be it, but not a great start so far.