1) I'm not sure how that page is created, but there's a few options for adding the button there:
* Add the SCLogin module to show on that page. You can configure the module to only show the social login buttons
* Add our Easy Tag, {JFBCLogin} to the output on that page. That could go in a content area or within the template file for what creates that page. That tag will add any social login buttons you have configured.
2) I just tried in Firefox and the authentication popup was right in the center of your site. Can you take a picture of what you mean? Also, if you have any add-ons for Firefox enabled, try disabling them in case they are causing the issue. Otherwise, try on an unrelated computer to see if you have the same issue.
3) Facebook uses Open Graph tags to generate the thumbnails that are used for a page. To specify the title, description or image for a page, add the following tags to the description of your products:
{SCOpenGraph title=Title for Page}
{SCOpenGraph description=Description for page}
{SCOpenGraph image=http://site.com/link-to-image.jpg}The title, description and URL should be automatically set by JFBConnect, but the image may not be, depending on the shopping cart solution you're using.
Once the tags are added, you can use
Facebook's Debug Tool
or other tools like [
socialdebug.com]Social Debug[/url] to get a preview of what your post should look like. Those tools will update Facebook's cached data for the page as well by using the new tags you've set.
I hope that helps,
Alex