1. Go to Settings → Payments in your 123ContactForm account. In the Payment processors section, click on the Payment gateway dropdown, select Paypal Pro and hit Add payment gateway. Verify that this payment method is enabled in the top right corner of the payment integration box.
2. Provide your PayPal Pro API Username, API Password and API Signature. Tick the option Use recurrent payment if you want to charge your clients on a regular basis after submission and even the number of cycles the billing occurs.
3. Tick the checkbox Enable payments for this form at page top and you’re set.
The PayPal Pro integration is now set up for your form. Here is further information that will help you use PayPal Pro as a payment processor.
Note: You’ll need to make sure you have paid the monthly fee of $30 for your PayPal Payments Pro account. If the fee has not been paid, you won’t be able to use the PayPal Pro payment processor on your order form in 123ContactForm.