Kahunas won’t connect with any existing payments you’ve already set up in Stripe.
The integration works for new clients or new packages only, so when you start someone on a new package, and they make a payment through Kahunas, it will then link with Stripe and manage everything from there.
It doesn’t sync the other way around (from Stripe into Kahunas), so any previous payments set up directly in Stripe won’t carry over.