Gas meter reading

My gas meter has only four number spaces.The Bulb web site has five.When I enter my four number reading it asks for the fifth cell to be completed.Help please.

@david3852 Please put a 0 before the read you want to enter

Hello I am trying to submit my first gas meter reading. It is a smart meter fitted by British Gas in 2016.It is a Landis GYR meter with A and B Buttons. When I press button A as instructed to do until a reading becomes visible all that happens is that the screen lights up - there is no text or numbers -just a beeping noise. I have been able to submit my electricity reading.

Hmmm that sounds tricky, @keith5703. So when you follow these instructions, pressing A, nothing appears on the screen? What happens if you press A repeatedly?