Cubase 10 Pro upgrade from Cubase 6

Hello. I use a mac0S. In 2011 I bought Cubase 6 in a box with USB-eLicenser. At the moment I have installed Mojave 10.14.6 on which the Cubase 6 does not work. Last week I bought from the official website Cubase 10 Pro upgrade from 6.

I received an activation code in the mail. After I bring him in the eLicencer Control Center they tell me the following:
There are currently no licenses that can be upgraded. Please connect the USB-eLicenser to the computer, which contains the relevant updated licenses.

What is the problem?
And how to solve it?

Download the Cubase 6 license onto your USB elicenser, then download the the Pro 10 license.