jumper.ai is powered by Stripe.
In the account section of your dashboard, you'll see
Click the button in blue called Connect with Stripe, which will take you to a page like this
Fill up the details as requested, click Authorize and that's pretty much it!
If you already have a Stripe account, simply connect it by signing in from the top right as you see in the image below
That's all there is to it. Upon successfully linking with jumper.ai - you will be redirected to your dashboard and you'll promptly notice
Voilà - time to rock and roll.