Sign in with your social identity {JFBCLogin}

There's 3 main causes that could be stopping the {JFBCLogin} text from not being replaced properly:
* The JFBCSystem plugin isn't executing. Make sure its published and, if so, try re-ordering it to the top/bottom of the system group to see if either position helps
* You have the System - Cache plugin enabled. Try disabling
* You've set an Admin Render Key in the Social -> Misc area of JFBConnect. If so, make sure you're using the correct key so that the tags are detected and replaced correctly.

I hope that helps get you going, but if you need more assistance, just let us know.

Thanks,
Alex

Not sure why the render key has to be blank. That setting has been properly detected by EasySocial in the past, but I'm glad to hear it helped get you going by removing it.

By the way what is the function of the System Page Cache and what other things are affected by its enabling/disabling?

That plugin has two functions:
* Page caching - Joomla will store the output HTML from a page after it's been rendered and then serve up this cached version of the whole page when it's revisited in the future. This *usually* works fine, but this plugin *must* be the last-ordered plugin to make sure it's caching the HTML after all other system plugins have executed. Otherwise, it will cache the page with the {JFBCLogin} tag, for instance, before the JFBCSystem plugin replaced the tag.
* Browser caching - This setting (disabled by default) will instruct the browser to store the HTML on a page. This can be fantastic for speed but a *disaster* on sites that allow authentication as the browser won't show the logged in view of a page if the user already viewed it while not logged in.

I hope that helps explain things, but should you need anything else, just let us know.

Thanks,
Alex