PayPal setup for an existing integration
If PayPal or PayPal Express appears for the store, open its method panel and review the environment and credentials shown for that exact gateway. For a Braintree-backed variant, verify its provider setup separately. Complete the provider’s approved test process before enabling the intended store and channel.
Check where your project exposes the method
Open Settings → Apps & developers for the installed plugin category if present. Open Stores → select a store → Payment methods for the store record. Use the provider's test tools to check your setup. See the Payment plugin catalog and Stripe Connect for their separate scopes.