Thanks a lot everybody for the contributions to this discussion!
Your recommendations were all useful to better understanding the plugin and finally realise a prototype against 10Duke.
When I try to install Google, Facebook and Twitter SSO plugins, and try to activate and restart the forum ...they are not working ...I mean they are not showing up in the social authentication.
How to fix this issue?
This happened when the forum is updated to the latest version.
I'm having the same issue... any updates on this?
This forum is running all three of those I think, without any issues as far as I can see. It's on the latest version.
you must forgot to set related informations in admin panel(social authentication)