What does dumb mode look like on the IHD?

Sorry to create another smart meter thread, but we had an economy 7 ‘dumb’ meter, and changed to a ‘normal’ tarrif as we were going from storage heaters to an air souce heat pump. In stead of having a normal siblge tarrif ‘Dumb’ meter put in, we had a smart meter. We live quite rural and understood that we would proberly not have an connection. However, on the IHD, it is displaying a figure. It doesn’t change with our usage.
Is this the “Dumb Mode” that these meters use when the don’t have a connection. its saying a gas value and we dont even have gas?! Just cheaking that were not connected to someone elses meter! It says 72p electricity and 94p Gas for today. Thanks.