To integrate your Common Ninja button widgets with the PayPal payment gateway, follow these simple steps:
Step 1: Go to https://developer.paypal.com/ and sign up.
Step 2: Click on “Dashboard” and under the “My apps & credentials"
Step 3: Give the app a name, and in the next window you should see the “Client ID” and the “Secret” keys.
Step 4: Copy & Paste the “Client ID” and the “Secret” keys into their respective fields in the button’s editor.
Go to the “Integrations” tab, and select the desired payment integration.
Then, paste the keys and click the “Save Changes” button.
Step 5: Now, go to the "Settings" tab, and scroll down to the "Connect to Provider" category. Click on "Connect to PayPal" and that's it.