Hello chekcsum,

There's something really crazy going on with your caching. It seems like when I reopen the page, I am still seeing the values that you have entered, http://screencast.com/t/BBYOVapu . This leads me to believe that the caching mechanism is messing up with your registrations.

I have tried to turn off the caching, can you see if that works for you?

I see the same thing also,
I disable the joomla cache plugin, and deleted the cache, and purge ES cache,
went to register and I see the fields are already filled.

Without the cache, it works!!!
But I am just using joomla default cache system, nothing else.

Also, I get a token in the registration email, but not when I register with facebook.

I think the "Progressive Caching" in Joomla is really erratic! I believe it's because it caches the php and the html as well There's no way for us to clear the cache.