Connect QuickBooks Online, PayPal, and Stripe from inside a workspace: Settings โ Connections.
Use Disconnect if you need to reconnect a different company.
PayPal uses Client ID + Secret (not an OAuth popup).
| Error | Likely Cause |
|---|---|
| invalid_client_id | The Client ID or Secret is incorrect, or Sandbox credentials are being used in the Live environment (or vice versa). Verify you're using the correct credentials for the selected environment. |
| NOT_AUTHORIZED | The Transaction Search feature hasn't been enabled for your PayPal REST application, or the activation is still pending. It may take some time for the permission to become active. |
You need: Stripe secret key (sk_test_โฆ or sk_live_โฆ).