To activate PayPal Payments in WHMCS 8.9 or later:
- Go to Configuration > Apps & Integrations and choose the Payments category.
2. Find PayPal Payments in the list and click on it. Information about the payment gateway module and its available features will display.
3. Click Activate.The system will redirect you to the gateway configuration page at Configuration > System Settings > Payment Gateways.
4. Enter the credentials for your PayPal merchant account. You can link your live merchant account to start accepting payments right away, link a Sandbox account for testing purposes, or configure both.
WHMCS will prompt you for permission to access your PayPal account. This is necessary in order to process payments and handle many important actions.
5. Click Confirm. The API credentials for your account will appear, WHMCS will save them automatically, and the page will refresh.
6. If you entered the credentials for a live merchant account, uncheck Test Mode. We enable Test Mode by default for this payment gateway.
7. If you want to display this payment gateway during checkout in the Client Area, check Show on Order Form.
8. Click Save Changes.
PayPal Payments will now be available for admins when they process transactions and, if you enabled it, for clients when they complete the checkout process.
