and welcome to the Community!
It looks like you'd been emailing our Member Services team, as there's been an unrecorded meter exchange on your gas meter with a previous supplier and your gas readings had been submitted in kWh.
If you could follow this guide on how to read your smart meter
, and then email them a photo of the gas meter reading in m3 (not kWh), that'd be great
They need to get your gas meter info updated on the national database for you, but they need some photos of your readings before they can do this