Sure thing.
The beta trial is open to everyone as it’s a public beta. However, the Kia integration has proven to be extremely unreliable for reasons beyond OVO’s control and neither myself nor the Charge Anytime team can recommend it - blame Hyundai/Kia for being terrible with their software!
You can use any Charger listed at https://www.ovoenergy.com/electric-cars/charge-anytime-cars-and-chargers though - and the list of Kia vehicles is there too. Since you’ve got the right Charger anyway, I’d go down that route.
You only need one or the other to be compatible - not both. Please don’t try to pair both at once as you will have a bad experience if you try. The Charger route is almost always the preferred option where supported.