Hello @Javid,
Thanks for writing in! Any plugin you’re using that provides you with a shortcode to output can be used in the builder. You should be able to take that shortcode and place it into a Content Area element, which is effectively a blank canvas for you to output anything that you need. If the content is not rendering in the builder, try saving and going to the actual live frontend of your website to see if it’s there. Sometimes a plugin’s code could have a conflict with the live preview, but we’ve tested this very technique with plugins like Revolution Slider and others which are very complex and have been able to see them rendering in the preview.
Regarding building out your entire website using Pro, this is certainly technically possible, but keep in mind the physical markup of your content. Pro’s header markup is output into the site <header>, so all of your content will technically be considered to be part of the header. Visually you can achieve anything you want here and definitely do this if you wish, but structurally this may potentially create some issues with how your site is “seen” by search engines or assistive reading devices, but I can’t speak to that with any certainty.
Hopefully that helps to point you in the right direction. Cheers!