Anyone any ideas on what I need to do?
Best answer by Jona6tc
I joined at the start of December and had exactly the same. The account will look like that until they get your opening readings confirmed from the old supplier, which can take up to 6 weeks from the switch date. If it's been over 6 weeks, you might want to contact OVO directly.
I emailed them via email@example.com and it's now working
I never go the reason as I had emailed from a different email address from that on my account but it still got fixed!
Hope this helps