Can someone please explain how to register Paypal API credentials. I've gotten as far as filling out the username, password and signature fields. However I'm a bit stumped about how or why I have to register the application with Paypal to get an application ID.
The fact that the link in the plugin takes you to a site that no longer exists doesn't help. The donations that I've received are showing up in my paypal account but not registering on my website. How do I fix this?