The Code block allows you to insert third party blocks on your website. It is possible to insert $a_widget$. You will find more information on this page: https://www.en.sitew.com/News/widget-block
These features are available for all $pro$ websites.
These packages also offer:
You will find the detail of the provided services on this page: https://www.sitew.com/Website-creation-packages
To upgrade your website to Advanced or Unlimited package, you can click on this link: Upgrade
You can also test for free and without commitment the Advanced and Unlimited websites and the advanced blocks for 15 days. To test, make a new website from the page $my_websites$.