eLicense for different computers

I buy the 7.5 version or cubase, and install it in my (traveling) macbook one month ago.
I need now to have the same software, in my Windows computer in the studio.
I install it and was working, but when I put the license activation code that was in the packet i buy, it was no value coz it was already in use from my mac…
How I will find a different license code, and still use the same usb license stick?
What I need to do?
Please wait for a fast answer!
Thank u very much.

You don’t have to activate your license again. Just install cubase and plug your USB-Stick on your windows computer and it should work.