Best answer by woz
I have to say, well spotted!
Are these opening readings or ongoing readings? In other words have there been previous reading submitted?
and...just to be sure you are looking at the serial not the MPRN? (supply number)
The serial should match - that needs putting right, it's probable that the meter has been changed but the database hasn't been updated.
Go to help in app or online ,ask wattbot, type message the team and attach a photo of the meter showing it's serial with your question, someone from PP will look into it and get back to you. In the meanwhile you should continue to supply readings