How to integrate SPC/DAP with PayPal 

Watch this video for step-by-step instructions

Step 1:  Visit PayPal -> Account Settings -> Business Information page. 

You'll find your PayPal "Merchant Account Id" on this page. 

Step 2: Copy and paste it in your SPC Settings page >> PayPal area >> Merchant Id field. 

Step 3:  Visit PayPal -> Account Settings -> Website  Payments page.

Click on "Update" under "API Access".

Step 4:  On the API access page, click on "View API Signature" under "NVP/SOAP API integration".

Step 5:  You'll find your PayPal API Credentials there. 

Copy the API Username, API Password and API Signature.

Step 6:  Paste the PayPal API Credentials in SPC >> Settings page >> Live Mode >> Under the PayPal Section.

Step 7:  Enable Instant Payment Notification (IPN) in your PayPal Account.

And set it to https://yoursite.com/dap/dap-paypal.php
1. Replace yoursite.com with your domain name.

2. If your site is running on https://www, then set it to:
https://www.yoursite.com/dap/dap-paypal.php

If not, set it to:
https://yoursite.com/dap/dap-paypal.php

Step 8:  Enter your PayPal API Credentials in DAP Setup >> Config page >> Payment Processor tab.

That's it.