Hi I am running on Android 5.01 and on there I cannot use Facebook connect in my mobile browser (Chrome and Firexox mobile). It works without problems on my normal desktop browser so it appears to be something that is only there on the mobile browser.

Url I use is: http://ox.merudi.net

Now I used mobile firefox to view the error console, and there I see the following error when clicking on FB Connect button:

in fb.js -> ReferenceError: FB is not defined.

So I suspect some loading order is failing. Now I do notice some other errors in the console, which I don't know if they are related, but just putting them here to be sure:

bootstrap.js -> nsIOService::NewChannel() deprecated, use NewChannel2()
bootstrap.js -> nsIAboutModule->newChannel(aURI) deprecated please use nsIAboutModule->newChannel(aURI,aLoadInfo)
browser.js -> window.controllers is no longer supported, don't use this for UA-detection

Please fix the connector to allow FB sign in, on mobile browser. P.s. I have the same error on my mobile browser when I try to login on the Oxwall store with Facebook, so also on your site this is not working too.