PayPal

1. Login to your PayPal account 2. Go to the settings button in the upper right hand corner 3. Click Account Settings 4. Search for “IPN” in the search box on the left 5. Click “Update” in the “Instant payment notifications” section 6. Click the orange button called “Choose IPN Settings” 7. Input the site’s… Read more of this article

Log into PayPal, then…You can click Account Access or just search for “API” in the search box…                                     … Read more of this article