There may be several reasons why the subscription code doesn’t work. Check as follows:
1. Fill in the correct subscription code.
2. If still with the problem, check whether the correct VERSION of APK is installed. There are two versions: AirTV(Blue color), and AirTV (Red color), they use different free trial codes.
3. If you have purchased the wrong version subscription code, please contact us to replace it. If you change the subscription code from the AirTV version to Plus, It is OK and please contact us. And you can pay the balance if any. Please pay attention: do please not activate the code, if you want to change/replace it.
4. If the above methods do not help, please get in touch with our support email directly.