WHMCS: Add SSO for Facebook, Twitter and Google -- 3

We want to give users the option to login with their Facebook-, Google-, or Twitter account. Here we need your help to make the config ourself.

We use the conferencing platform Jitsi.

Our admin and you login there at the same time on Jitsi and the config is done together with your help.

Our Website is:
https://www.firstcloud.online

Group sites are:
https://www.scngmbh.at
https://www.scngmbh.ch
https://www.scngmbh.de
https://www.seminar-experts.at
https://www.seminar-experts.ch
https://www.seminar-experts.de