Thanks for your reply.
When I pressed green button A the all the alphanumeric LCD elements activate showing no data. Then goes back to rate 1. If I carry on pressing I see what looks like engineering data, but no rate 2 appears.
After midnight the display switches over to Rate 2 display automatically.
I contacted EDF via their SMS service and they now say I was moved to single rate. But if that is so, why would I be seeing Rate 2 at midnight.
I also checked the EDF websites to upload manual reads, and that too requires two rate readings. As if I was still on economy 7.
Anotherthing I noticed is the Chameleon IHD under meter information shows 16.495 kWh, but on the actual meter for rate 1 it says 14. So I guess the difference is rate 2.
So why would EDF say I am on a single rate when rate 2 appears at midnight?