JFBConnect login problems on mobile (desktop is fine)

That Facebook URL looks correct. When I test in Chrome using the mobile simulator, I see the same behavior.. I'm returned to the login page and then the auto-login feature kicks in and is trying to repeatedly log me in.

That behavior usually indicates that something on your site is altering the return URL from Facebook in a way such that JFBConnect can't access the authentication token properly. Do you have anything on your site meant to 'switch' to a mobile view or do anything else when the browser returns?

Actually, on further testing, I just tried to login on the main page from the desktop using Firefox and ran into the exact same issue. I'm not sure why it's not working at all for me and seemingly for you, but there definitely looks to be something strange going on.

Let us know if that helps narrow some things down,
Alex

I'm not sure what's happening. Now, testing the exact same way I tested the other day is working just fine. Authentication works in both mobile and desktop modes of the browser and I could repeatedly do it in each.

If you're still having issues, can you try disabling Varnish entirely to see if the problem goes away? I'm not sure what would be causing the problems you describe other than caching somewhere in general and narrowing it down (or eliminating cache) is the first step.

As for the URLs being returned, when I tested the other day, the return from Facebook looked just right, so something on your site was either:
a) altering the query params before they arrived at JFBC, preventing authentication
b) JFBConnect authentication was actually working, but the HTML output was cached, so it looked like I was logged in. Possibly navigating to another page would have shown me as logged in.
c) There's a bug in JFBConnect somewhere. While always possible, this isn't one we've heard of before.

I hope that helps,
Alex