How to activate Unyson Page Builder for the blog posts?

By default, Unyson Page Builder is not intended for blog posts. 

But if you want to activate it for posts type, click WP Dashboard => Unyson => Page Builder => Settings.

Select the checkbox for "Blog Posts" and save changes. 

After these steps, Unyson Page Builder will be available for posts. 

This activation may occur with different styling issues and you would have the appropriate knowledge in HTML/CSS to fix them.