After installed the apk, the screen showing nothing, only black, or just some figure appear but without picture, seems disconnecting. how to solve?

You can do the subscripotion again and put the code.You can check the endurance days from software.

That meaning subscription code is transfered, please contact the seller to solve.

1.Maybe your box memory dose not enough, please clean cache. 2.Maybe the app version dose not match the code.

Do not worried, we will help to transfer the subscription code to your another/new device. Please contact us with below two details: […]