Set up a connection to Returnly

API guide link: https://developer.returnly.com/api/#section/Introduction

Link to authentication page: https://developer.returnly.com/api/#section/Authentication

1. Name: Required: Name the connection.
2. Connection type: Required: The form will automatically select Returnly.
3. API Key: Required: Enter the API key. Use the following steps to get an API key:
   1. Log in to your Returnly account.
   2. Click Your Account.
   3. The API key displays on the Account overview page:
      
   4. Click COPY to copy your API key.
4. Borrow concurrency from (optional): Select another connection from the list....

5. Concurrency level (optional): Up to 25 allowed....