Can't get Events+ to mark attendee as paid

We have an test event setup that is $30. We have it in Sandbox mode and when we complete the payment on the paypal side, it doesn't register as that user being paid. Still has the nag box and in the backend says hasn't paid.

Also, how do we find the IPN url so we can just test that in the paypal sandbox?

Also, :slight_smile: can someone point to the file(s) in this plugin to change some of the text, certain items read funny.

Thanks :slight_smile: