Step 1

First, you will NEED a PayPal BUSINESS ACCOUNT (If you do not have a business PayPal account, it is a free upgrade and gives you access to your API Signature)

Step 2

Click on Account Settings

Step 3

Step 4

Step 5

Step 6

Copy the information provided EXACTLY back into BiddingOwl. Please make sure to check for extra spaces when you copy and paste the information. Sometimes, the copied information sneaks in extra spaces before or after the API

 

 
Here are the same instructions directly from PayPal