eldarius

different templates? – Yes, from Betheme to Classic wp themes (twenty)

are the three hostings a different hoster or it is the same hoster with three domains/webspace? – 3 differnt hostings. 2 are in cz, 1 is abroad.

that must be a “global” issue that the database table could not be written/filled. so it must be something that is on all your installations the same that causes the issue. – on one hosting I didnt install anything – wordpress was pre-installed for example.

No, there was something about functions.php

I really tried it on 3 differnt hosting with differnt content = same result.

I did it – there was nothing about your plugin.

the result is the same. I created new wp site on another hosting – same problem. I have only one plugin installed

But i noticed after activation this error

The plugin generated 285 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.

Done. Result is the same.

done. let me know if u login

give me your email please

Yes, i set 755, i am pretty sure, i can show a screenshots. i tried on 3 different hostings

1. the social plugin overrides the function get_avatar() so the other plugins can correctly display the social avatar.

2. the social plugin does not take care of the new wordpress function get_avatar_data() and get_avatar_url() so othes plugins does not correctly display the avatar.