I'm getting an error connecting to fb

3 Things. Numbers 1 and 2 are not an issue while I am logged in to wordpress, but to someone that is not logged in, they are an issue.

1. I'm not seeing the paypal button show up on my events http://rawfoodgratitude.com/events/2013/03/raw-food-gratitude-workship/

2. The alignment on the events page is all weird http://rawfoodgratitude.com/events

3. I'm getting this error while trying to connect or authenticate through fb

Error
An error occurred. Please try again later.

API Error Code: 191
API Error Description: The specified URL is not owned by the application
Error Message: Invalid redirect_uri: Given URL is not allowed by the Application configuration.

I'm not sure what fields need to be filled out in the fb application, can you let me know and/or send me a screenshot of what needs to be filled out with what?

Oh, and on that note of not really getting how to setup the FB app properly, I'm having a similar thing with twitter

Whoa there!

There is no request token for this page. That's the special key we need from applications asking to use your Twitter account. Please go back to the site or application that sent you here and try again; it was probably just a mistake.

Thanks =)