Troubleshoot and resolve Transaction ID already exists errors for PayPal Payments transactions.
Troubleshoot and resolve issues with customers receiving unexpected subscription cancellation emails from PayPal®.
This module adds unbranded PayPal® Advanced Checkout options for credit and debit cards to the PayPal Payments module.
This module can store payment methods with the advanced security of PayPal Vault and process payments using PayPal's many features.
Configure the PayPal Payments module. PayPal Payments processes payments, stores client PayPal® details, and enables faster checkout.
Migrate from PayPal® Basic to PayPal® Checkout in WHMCS 8.8 and earlier. In WHMCS 8.9 and later, we recommend PayPal Payments.
Update the PayPal® webhook URL. If your WHMCS system URL has changed because you moved the installation, some PayPal modules require this.