Ellen,
We don't have a way to auto-post new articles to Facebook, and we don't recommend it. It's prone to errors, it's not very personalized for Facebook users, and it isn't great for promotion as you aren't controlling when the post goes out.
Instead of the old Share button, I'd recommend using the Open Graph tags which JFBConnect can help you implement. With them, you can set the image(s) that represent a page. Then, go to your FB Page and use the "Status Update" functionality. From there, you can type your message and include a link to the article. That will then let you choose the photo (from the Open Graph images you've set) and create a much more personalized introduction to your article than Share or an auto-post could do. Additionally, if anyone else links to your post, the title, description and image you set with the Open Graph tags will be used. Again, this helps make sure your message is right.
With the Share button, Facebook will try to guess the title, description and images that represent your page, which isn't always optimal.
Rich,
You enabled the Comment box, which is 'growing' the area a bit so the Send button seems to work. Without being able to see it fail, I can still make a good guess that the problem is the following CSS issue in the joomla.css file:
.item-page, .item, .leading-0, .leading-1, .leading-2, .leading-3, .leading-4, .leading-5 {
overflow:hidden;Try removing that, and testing again. Let us know how it goes!
Thanks,
Alex