Transferring the license
Non Mac App Store version
If you want to transfer your license to another computer, go to the About dialog and click on the Unregister button. A dialog will ask for confirmation then the license will immediately be available to use on another computer once the unregistration has been confirmed. To register another instance of TripMode with the newly freed license, repeat the same steps. The Unregister button turns into an Enter license button when TripMode is not licensed. Clicking it wil display the licensing window where the needed information can be entered to activate the software.
Mac App Store version
Your subscription already gives you the right to use TripMode on another computer and is linked to your AppleId. Just connect to the Mac App Store on the other computer with the same Apple Id and restore purchases in TripMode to regain access to all features.