How often can I (or must I) activate one version on different computers (e.g. notebook and stand-alone PC)?
Without changing your hardware, as often as you want. With a hardware change – 3 times online, or by telephone without having to register. You’ll need to register the 4th time. For further activations, which are fundamentally possible, you’ll need to contact Zuxxez personally. As long as it’s the same user or the buyer of a second-hand version, an activation code will be provided.