There are several ways to install WordPress plugin, we recommend using FTP but you can choose other ways. Please read more about WordPress plugin installation on the official website: https://codex.wordpress.org/Managing_Plugins Upload WordPress Plugin via FTP : Step 1 – Please unzip the installable zip file that you’ve downloaded (gt3-elementor-zoom-gallery.zip). In case, if you’ve downloaded the main zip file “Zoom Gallery WP.zip”, please unzip it and use the installable one located in the following folder “Plugin(v…)” ; How to Install Plugin
Step 2 – Upload “gt3-elementor-zoom-gallery” plugin folder to the plugin directory (/wp-content/plugins/) of your WordPress website using FTP. You can use any FTP client to do that;
Step 3 – Log into your WordPress dashboard and activate “GT3 Elementor Zoom Gallery” theme in Plugins section;