Deleting a license, how

I have a new pc build for my studio and this one i will activate a license. But my older PC is going to be sold and on this PC i have a cubase 12 installed. Now i want to delete this license but dont know how. I have tried to contact support but i got no response. Maybe someone here can help me

Welcome to the forum.

The first solution to deactivate a license should be by launching the Steinberg Actication Manager, on the machine to be sold, and press the Deactivate button and finally deinstall the software.

If the machine is already gone you can do that in your mySteinberg Account, as described here