Hi JonDixon,
You may have missed it when purchasing the product, but there was a box to enter your iLok ID and have the license sent to your account.
It does not appear that you have this yet. When you are logged into serato.com you can go to your products page here:
serato.com
You will see a Pitch 'n Time LE license registered here, and after clicking "show serial numbers" it will reveal the code and show a box where you can enter your iLok ID.
This will then send the license to your iLok account and you can then transfer it to your iLok key in order to authorize the plugin when using it.
Let me know if you have any trouble doing this, and perhaps Private Message me your iLok ID and I can do it for you.