Please Note: accordingly with PayPal, You'll need to create an API username for PayPal that's different from your shopping cart's username. You can access PayPal via API only if you have a PayPal Premier / Business / Website Payments Pro account.
Log in to your PayPal Business account HERE (links to: https://developer.paypal.com)
In the dashboard click “My Apps & Credentials”, if not already there.
In the main window under “My Apps & credentials” Choose “Live” (There is nothing stopping you from using PayPal sandbox, keep in mind that in this environment no real money is involved)
Below in the “REST API apps” click “Create App”
Fill the “App Name” with any string you find appropriate, we recommend using a name that you can easily identify the purpose for later reference, e.g. "MyMusicStore-Slyk”
Press “Create App” button
In the next screen you’ll see your Client ID, copy it to clipboard.
In your Slyk dashboard paste the above step in the “client ID” input form
Back to PayPal click the “Show” label
Select your Secret and copy to clipboard
Again back to Slyk dashboard paste your secret into the “Secret” input form
Click "Connect and Save".
You should see the following message:
At this point Slyk communicated successfully with PayPal and automatically created the necessary webhooks for you. If you're experiencing any issues using Paypal please refer to the troubleshooting section in the end of this page.
Congratulations, your PayPal account is now configured in your Slyk and ready to be used by your customers.