Sorry, but we don’t provide support for third-party plugins.
You can try update theme to the latest version. But we can’t guarantee that updating solve your issue.
Don’t forget to make backup site before update.
Here is video tutorial how to update theme: https://www.youtube.com/watch?v=KdWESIIPU1k
Alsp you’re using old plugins versions.
You can download the latest plugins versions at this link http://www.8theme.com/download-plugins/ ,
enter your purchase code of the theme to get the plugins.