bought a security license for a NSG200 by mistake.

So i bought a security license for a NSG200 but own a USG200 by mistake. The license website allows for this and suggests that it is highly recommended but does not say it is not for the model that I own. i am trying to order the proper one now and with the great help from support, they pointed me to the correct location. I sent a note into sales portal and I am waiting for a response to my query. I won't fix this until my original order is cancelled and refunded. You can see below how potenially easy it is to do this and won't stop you to say that you don't save a device that can support this license. Please help