Best answer by Transparent
How has the reading been "rejected"? Did you try to enter it online on your My OVO page, or via the OVO App?
What was the nature of the "rejection" message?
You can always put in a reading directly to OVO Customer Support (CS) by emailing them using email@example.com. That means you keep a time/date stamped copy of when you sent in the readings, and you'll receive an acknowledgement. CS can override the internal "sanity check" which is performed when you submit readings online.