Hi Hannes,

Sorry to hear of the problem you are having.

Most probably your hosting is blocking requests to http://github-api-cache.unyson.io/, to check if it is so, add the below code in your {jevelin}/functions.php: and let us know what you get in the admin area.

add_action('admin_notices', function(){
    fw_print(wp_remote_get('http://github-api-cache.unyson.io/'));
});

Best regards,
Shufflehound team