Best answer by NinjaGeek
Updated on 14/04/21:
Two possibilities here:
1) The prices are correct but they're including the 5% VAT not shown online.
2) The tariff that's been loaded onto the smart meters/IHD is wrong.
To work out which, calculate the prices with 5% added and if the prices showing are still out, message OVO so they can update the tariff loaded onto the smart meter through webcat via the Help Centre
There's a similar topic for wrong prices showing on the Pipet IHD here.
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