Paste your model files, etc. from the previous device to the new installation of ExtendSim.
Launch ExtendSim on the new device and activate it using the same Activation Key you used for your initial installation. (If for some reason you weren’t able to deactivate ExtendSim on the previous device, you will get an error message stating your Activation Key is already in use on another device. In this case, contact Imagine That Inc.)