Looks correct, indeed.
I have just tried to authorize and it should be okay.
Try again pressing the authorize button and let me know if you get the same error message.
The error message means that the URL Facebook is requested to redirect to (your site) is not the same as the one configured (Facebook App).
This is an important security measure of Facebook.
So, double check if you entered the URL the plugin indicates in red into the correct field in the Facebook App.
Note that the domain field should be empty.