Test purchases with PayPal
It can be helpful to run some test purchases to make sure everything is working how you want it with your Sunshine install. PayPal has a Sandbox which is an almost exact clone of the live site where you can make test accounts and run test purchases.
Login to the PayPal Developer website and create an account.
Create 2 test accounts: 1 Business account (representing you in the testing process), 1 Buyer account (representing your client in the testing process).
In your WordPress admin, go to Sunshine > Settings > Payments. Enable Test Mode for PayPal and enter the email of the Business account you created in the previous step.
Make a test purchase using the Buyer email address.