If you are using a pre-made theme, The best approach would be to contact yoru theme developer and provide them link to the Wiki article on how they can add support for the plugin.
If the above is nnot possible, You can also add support for the plugin from your child theme. Just follow this article
JetBlocks For Elementor 1.1.0 – WordPress Plugin
Before you start download JetBlocks For Elementor WordPress Plugin from GPLNulls you should know. All files on our site can be downloaded by direct link. The link is generated using AJAX technology. Therefore, some Internet browsers or their extensions may incorrectly generate a link.