Smart meter manual reading different to smart reading

[I have a Liberty 110]

At some stage, some consumption (2750.4 kWh) was recorded on Register 02. You’d have to go back through all the available meter readings (400 days worth) to see whether you can spot when that stopped happening. The other figures you see are

So, this meter appears to have been set up for E7 but later reconfigured for single rate by simply diverting all usage to the one register. R01 is usually ‘Peak’ rate, but not necessarily. Incidentally, your rates are identical to mine.

The R02 register is showing an historical figure dating back to when the meter was configured for E7, and current usage is only recorded on R01. It’s odd, but that’s why the readings you see online are different from your Button 9 reading, which includes the obsolete figure from R02. Your current billing will be accurate. 

You will most probably have been charged for the 2750.4kWh a long time ago, so you’d have to check your old bills to see that. If you can’t see any appropriate charge, that usage is most likely to have taken place more than a year ago, in which case its cost will be written off. So I think you’re safe from any unexpected bill regardless of what happens when the meter is exchanged.

In my amateur opinion, the meter is working as expected and recording consumption as it’s been configured to. The problem seems only to be the intermittent transmission of data to OVO. Has the meter been enrolled and adopted (‘E&A’) on to the DCC system?  To check, enter its MPAN into this tool: smartmetercheck.citizensadvice.org.uk Because meters on DCC use a different way of communicating with the outside world, it could well be that the problem would change at E&A, with no way of knowing whether it would get better or worse.

If you can access your account on a computer, I’d be happy to help you do a little forensic analysis to try and find out where the R02 reading came from.