Best answer by Tim_OVO
Tough one for another user to help with
We'd get send the new meter details within about 6 weeks of the new meter being fitted. We'd then update MyOVO to show the new meter details. From that point on, you'd be able to submit your meter readings, not before.
That said, drop us an email and we can check if this update can be done any earlier (and take down those readings from you): firstname.lastname@example.org.