After downloading the plugin from email.

Now, login to WordPress Site.

Click plugins>Add New

Then click Upload plugin

Next click Choose File and select the “Advance easy shipping  for woocommerce” file you downloaded from the email

Click Install Now

After installation, click on Activate.

After activating the plugin, you will be redirected to a license activation screen. This will verify your purchase.

Enter the license key from the first email received after purchase.