Hi again,
I have a free hosting account for tests before apply something to production environment.
I contacted the hosting provider and it seems that the have deactivated Twitter and Facebook API acceess on free accounts.
Nevertheless, thanks for your support.
Hi,
Thanks for your response.
The provider reports that Curl and CurlSSL are installed by default on all servers.
Also the plugin doesn’t show any warnings in WordPress admin area, just “The API authentication keys need to be set in order to use this plugin.” in Authentication tab.