To setup Paypal IPN (Instant Payment Notification), watch the video below:

OR

Follow the steps below:

• Go to https://www.sandbox.paypal.com and  create a business account.
• Login to your account on https://www.sandbox.paypal.com

 

• Click on profile

 

• Click on profile and settings

 

• On the left menu, Click on My Selling Tools

 

• Instant Payment Notifications – Click on update.

 

• Click on Choose IPN Settings

 

• Enter the notification URL (example: www.example.com/paypal/payment/verification)
• Select Receive IPN message to enable IPN notification.
• Then click Save