Legacy versions of Sound Forge and Acid programs can be activated on two different devices at the same time.
If you exceed the maximum number of devices that can be used simultaneously, you must deactivate an already activated device in order to use the product on another computer.
You can do this either directly in the program or in the MAGIX Service Center https://www.magix.com/int/support/my-service-center/ .
You can find your activated serial numbers and activations in the MAGIX Service Center under "My products".