The CMB2 made the difference. Haven’t found that information before. I really like to keep the plugins reduced as possible. If it is an important part of the theme, why it is not part of the standard installation? Anyways, it works now
From 4.0 version, old Theme Options was changed to Redux instead of Option Tree, so you will need to install Redux and CMB2 plugins.
We moved all the shortcodes to Legenda core plugin according to Envato new requirements.
You can find a list of required plugins here – https://www.8theme.com/demo/docs/legenda/Plugins/Included_Plugins