Online input of meter readings is a new development for npower. Maybe this is a bug which they need to be told about.
My email from npower asks for a meter reading on 1-25 June to be submitted by 1 July. Our your dates different?? Or why submit now instead of having an extra 23 days of generation paid for in July instead of October. Previous experience with npower is that they do not pay earlier if you submit earlier.
Modified to add
They ask for both
Our dates are the same, just thought I'd send the reading at the same time as the reminder so as not to forget.
No big deal, will just send an email same as last time.
Just thought this might have been quicker/easier.