Thanks for the replies.
It is a smart meter very recently installed by SSE. I am now on a prepayment contract with Bulb although haven’t setup any DD or other payment methods and have no information on how to ‘pre-pay’ and so on.
The previous meter, that came with the house, was a PAYG meter that could be topped up at a paypoint. If ever this ran out, the gas would disconnect until credit was added.
There is no gas at the boiler, or hobs, so that rules out the boiler.
If your on a prepayment tariff, then you need operate your smart meter like an old dumb prepayment meter,. This means you will need to make sure your meter has credit and that you top up your meter regularly.
However, I thought bulb only took customers with smart meter on a credit agreement, as the current smart meters cant communicate with most energy suppliers including bulb after switching to a new provider. which the link details, provided in @Allanr previous post