Yeri.org Multisite Facebook Login

Are you using this plugin: https://www.ads-software.com/plugins/oa-social-login/?

And are you using a “multisite network” where there are multiple sites sharing the same WP core files?
https://codex.www.ads-software.com/Create_A_Network

If English is really a limitation, you might try seeing if your language is here:
https://make.www.ads-software.com/support/handbook/contributing-to-the-wordpress-forums/support-forums-in-your-language/