TrainYourEars requires an Internet connection for the initial activation.
If your computer is not connected to the Internet and you need to activate the software, you can temporarily connect it to the Internet to perform the activation. Once the software is activated, you can disconnect it from the Internet again. If you try to open the software without an Internet connection in the future, it should work without any issues.
If you have any problems activating the software, you can contact us.
TrainYourEars Support 