You will have two ways to get latest version from our website.
Manually download and install latest version
Once you purchased the pro version from your website, you will have access to download from my account, please login and see the Orders or Downloads to see your plugin zip files. you can download and then upload on your site or reinstall the plugin. You may need to delete/uninstall the older version first.
Automatic update by license activation
Another way to get automatic updates and notification by license activate. once you purchased from our website you will see a license key for each product will generate and you will see all your license keys here, for first time you will need to delete or uninstall free version and manually install pro version that you downloaded from our website, after installing pro version you will see the license input field under settings page, please see the screenshot
Now you are ready to get the automatic update notification and install latest version from your plugin list page.