Eventbrite Authentication

Hello,

I am hosting a web site outside of wordpress with the theme Eventbrite.

The site address is : https://www.scrumdose.com

I am having major issues with it.

1. I cannot get Evenbrite authentication work through Appearance->Theme Options. The message being displayed is as follows.
“The application you’re trying to use has made an invalid request to Eventbrite. Please contact the application developer.”

2. https://www.scrumdose.com goes blank when launched. I believe this is because of the issue above since I am not able to set any pages related to the theme.

https://www.scrumdose.com/blog works fine.

As you see I am quite new to wordpress.

Any help is deeply appreciated.

Thanks in advance