Download the latest version from CodeCanyon.
Double click the downloaded file to extract it.
Copy website.zip file to the root of your server (same place where files were uploaded during installation).
Delete "vendor" directory from your server (So there are no old unused files left from previous versions).
Empty "storage/framework/cache" folder.
Extract the website.zip file into the root directory and overwrite old files.
Visit http://yoursite.com/update url and click Update Now button.
Once update is completed you will be redirected back to homepage.
No users, data, uploads or settings will be lost on your site when applying updates.
If your server or hosting provider uses some kind of file caching (supercacher, opcache, cloudflare cache etc) you will need to clear that cache after updating, otherwise some changes from the update might not work properly.