As great fans of the YOOtheme tools we have started to add our own Custom Elements for the YOOtheme Builder. From completely new features to enhanced core features that we have needed for our own projects. We offer them here and they all come with a 6 month access to download and support.
They are compatible with both Wordpress and Joomla (and of course needs latest YOOtheme Pro theme/template installed).
Our Custom Elements works for both Wordpress and Joomla and we always recommend you update to latest versions. We also prefer you use PHP 7.
The installation is simple but does need you to move over a folder with files via FTP to your web host. Installation instruction is in the README.txt that comes with the downloaded ZIP package.