Hello,
thanks for your answer.
The user registration is enabled; to be sure I also tested it by activating a user via the "old" joomla user registration form.
To do that I used the email of my facebook account.
After the email activation I tried to login via facebook, and _ONLY_AFTER_ the old-way user creation, the facebook login worked. BUT ONLY ONCE.
After I logout I tried to login again via facebook, but now the button stopped working: if you click it nothing happens (again).
It seems that the facebook login works (but only once) only to login into your account that you previously created via joomla user registration/activation.
My Facebook plugin version is GK4 1.2; is there any upgrade that might solve the problem?
My template version is 2.10; I made several template overrides, especially the ones involving Vituemart. What would it happen if I upgraded the template? Would all the overrides be overrided?
If I can't use this feature I would like to deactivate facebook-login button; but even if I deactivate both plugin and template facebook option, the button still appears (now in a different position).
Thanks