FMS on Amazon Web Services License. Does it need enter License(Serial Key)?

FMS on Amazon Web Services License. Does it need enter License(Serial Key)?

After Subscribe on adobe.com(Adobe Flash Media Server 4.5 on Amazon Web Services)

I build the Amazon EC2 successfully.

In amazonpayments, the amazon show me an Activation Key.

On  Application Activation:

The screen give me following information.

Generate an Amazon Activation Key  

An activation key may be required as part of an application's registration process. If your application requires it, follow the steps below:

Step 1: Click on the Generate Key link to generate an activation key for an application.

Step 2: Copy the activation key.

Step 3: Click on Go to Application to access the application.

Step 4: Paste the activation key if and where the application specifies.

But in Adobe Flash Media Administration console, It is missing the License(Serial Key)

Does it need enter License(Serial Key)?

How can I use the  Activation Key?