Here are the system requirements for using Dynamic Content for Elementor.
If you are unsure whether your server supports this, contact your host.
Requirements
WordPress 5.7 or greater;
PHP 7.2 or greater;
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 3.15.0 or greater and its minimum requirements. It is not mandatory to install Elementor Pro, but if it is installed, version 3.15.0 or greater is required.
Recommended
WordPress 6.6 or greater;
PHP 8.0;
MySQL 5.7 or greater;
WP Memory Limit of 1024 MB;
Elementor free version 3.23.0 or greater. It is not mandatory to install Elementor Pro, but if it is installed, version 3.23.0 or greater is recommended.