You can remove the stars now.
I've never seen an issue like that before. I'm not sure what's causing the button to not appear. Basically, our JFBCSystem plugin replaces that {JFBCLogin} tag with the HTML/Javascript that should render the button. I'm not seeing the HTML or the tag, which means the JFBCSystem is working but either it's not replacing properly or something else is stripping that tag later.
There's 2 ways to resolve this:
* Switch to using a custom image instead of the Javascript/{JFBCLogin} tag. You can do that by switching your Custom HTML module to use the following code instead of the tag:
<a href="javascript:void(0)" onclick="jfbc.login.login_custom();"><img src="/link-to--an-image.jpg" /></a>
* Private Message us a set of admin credentials and we can investigate further on your site.
I'd recommend the first as an image loads faster and should definitely fix the problem, but have no problem looking into it further if you want.
Thanks,
Alex