Please know that you need to connect a business account. Personal PayPal accounts can not be connected. 
Follow these steps:
  • In your Dashboard, click on the Edit button in the Receive Funds box.
  • Click on the PayPal logo
  • Click Connect to PayPal
  • Log in to PayPal and follow the prompts
  • When you reach the last step, "Thanks for signing up," click the blue button Go back to BiddingOwl. Do not take the other option.
  • All set and connected 
We included some screenshots as references.