It's a compatible charger (you can use any ev then) or a compatible car if you have a compatible charger and a compatible car they say use the charger this also makes sense if there is more then one EV in the household
All you need is to log on to your OVO account and under upgrades you can add your ohme\Idra charger takes like 3mins you will need your ohme\Idra log in some customers service people don't have a clue I have been using it now for over a year and just renewed it like this (you can even do it with there app)
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Edit in fact they say they prefer you use the charger instead of a compatible car