All looks good to me to this point but can put only numbers in. I did some Googling but what I found wasn’t helpful and thought quickest/easiest would be here.
Copy/paste yields similar result in that only the numbers get entered (in sequence as if the letters don’t exist)
You need a Steinberg USB eLicenser, or a Vienna Symphonic Library Vienna Key (which is the same thing, as VSL use Steinberg’s eLicenser system). Normally the Steinberg product is cheaper, but there are supply issues at the moment because of high demand during the Cubase 50% off sale.