Hello,
You can add this custom CSS code:
.header-center2 .top-bar .languages-area {
text-align: center;
}
I would recommend you to update the theme to latest version – https://www.8theme.com/documentation/xstore/theme-installation/theme-update/ and Core plugin too – https://www.8theme.com/documentation/xstore/plugins/plugins-update/
There is a new feature – Header builder, you can activate it in Theme Options and create the header from scratch depends on your needs.
Regards