Hi,

Does this plugin support the editing of posts that are in several languages ​​using the Translate plugin? Is there any preview or demo?

Thanks

There is not a preview function but you can accomplish something close to it by creating a "preview" or "draft" category with permission set to just your authors. Then posts can be published to those categories, be visible just to authors until they are ready for public categories.

As for language support, the posts are just rainlab.blog posts and support the same features as that plugin. So I do not know the answers to that.