Galaxy Tab 3 8.0 (SM-T310 rooted) screen mirror problem. topic

Hello to everyone!Please i desperately need your help!I have bought the tongle tronsmart T1000.At first when was using ez mirror (other functions were working fine) a popup message was showing up telling that there is a hardware problem.Then i copyied the line wlan.wfd.hdcp=disable into the puild.prop (to disable hdcp protection) and this time i managed to tranfer ONLY sound with ez mirror without image!!!!The image is absolutely blank!!!
PLEASE HELP!!!