Licenses for additional features/products are related and bound to the System not to user/server.
1. Select the system
2. Go to Shop, then Wallet and select option to redeem code:
3. Enter the previously purshased coupon code and press ' SHOW'
4. Short product description is displayed. If it corresponds to the purchased product (in this case Virtual Thermostat PRO) click 'REDEEM COUPON".