The API configuration screen pre-fills the Auth URL incorrectly. It fills in ‘http://[my app url]/tribe-oauth/eventbrite/’ with a trailing slash. The associated instructions with this field say to copy and paste this value into the OAuth Redirect URI setting in Eventbrite “as it must be identical to what you see above“. But, the paragraph above states that the URI should be set to ‘http://[my app url]/tribe-oauth/eventbrite’, no trailing slash. THE DIRECTION TO COPY AND PASTE THE VALUE THAT IS AUTO-POPULATED IN THE AUTH URL FIELD IS INCORRECT. The value that is entered on Eventbrite MUST NOT HAVE THE TRAILING SLASH.