Bluetooth Connection between EV3 and Tablet failed

Hi all together,

i need help with my roboter-app. Since the new update at the 3rd february my bluetooth connection between the EV3 brick and my tablet doesn’t work anymore. I open the the app with actuall version of the MIT AI2 companion. Then I click the list-picker “connect” an chose the roboter name and the app suddenly brake down an the display is permanent black. There is also the Error: 3101 is the Roboter gone to sleep? at the screen but the bluetooth connection still exist. !

Is there someone who can help me ? Thank you!