Can Cubase 12 be used on more than one computer at the same time?
Yes - up to 3. I have it installed on my desktop and laptop computers.
but can you use them at the same time?
I read in an article that I had not released simultaneous access!
There is no code in the software that prevents you from running it on multiple computers at the same time, that I’ve found. In fact, you can run it disconnected – just unplug the network, or turn off the WiFi.
That being said, I don’t know whether the Steinberg license allows you to do it – you’d have to carefully read that and interpret it for yourself.