Once you purchase your Landing Pages subscription, please check your email inbox. You should receive an email from AliDropship with your license keys and the add-on file. Download this zip file and log into your WP admin area.
Go to the Plugins tab → Add New. Click the Upload Plugin button.
Click 'Choose File' to select the zip file you've just downloaded or simply drag it to the install area. Click the Install Now button to install the add-on.
You'll be brought to the License tab. Copy the API keys from the email. Make sure you copy all the symbols including PUB- and SEC-. It should look like:
Click the Activate button to get started.