Hello!
I've been reading the forum for a while, fixing some issue i had thanks to the docs and forum replys!
I sorted pretty much everything by now, a part from this little bugging thing:
I installed CODOFORUM on my webspace, done the smtp configuration (with my domain email):

but everytime i try to register a new user with a working email he doesen't recive anything.
Moreover i can't seem to upgrade his status using the backend as i get the following error:

If i edit his status from mysql itself it works, but again, using the backend to change his position from let's say "user" to "admin" will give me the same error:

I tried to bypass it by using the plugin Unilogin, i created the facebook app, made it pubblic, got the ID and secrect , edited the config.php but it still doesen't seem to work as i keep getting this:
Missing provider application credentials.
I tried to reinstall hybridauth (2.2.2) manually, changing the "base_url" to the complete path, but it didn't fix it 
Thank you very much!