After you submit the trial application, we will mail the STBBOX to the installation address, you can follow the instructions to install or our technical engineers will come to your home to install and test for you, please decide whether to formally sign a contract to subscribe to our services within the trial period of 7 days, if you decide to cancel the trial or do not subscribe to our services, please ensure that the device is in good condition and send it back to our designated address within the trial period! If you decide to cancel the trial or do not subscribe to our service, please ensure that the device is in good condition and return it to our designated address within the trial period.