After connecting your Stripe account to Playground, there is one last step you have to do in order to allow parents to pay via ACH.
Go to https://stripe.com/docs/ach, and make sure you are signed in. You can tell you are signed in if either your center name or email shows up in the top right corner of the page. If you are not signed in, please sign in before moving onto the next step.
Once signed in, there will be a purple "Enable ACH" button that you must press to agree to the Stripe ACH Terms of Service. Once you accept the terms, you're good to go!