Here are the system requirements you need in order to use Dynamic Content for Elementor. If you are not sure whether or not your server supports this, contact your host.
WordPress 5.2 or greater;
PHP 7 or greater or greater. From the end of April 2021 PHP 5.6 is not more supported;
MySQL 5.6 or Greater;
WP Memory Limit of 256 MB or greater if you need all features activated else you can disable some features;
Elementor free version 2.9.11 or greater and its minimum requirements.