Display not appear in the list

Few days ago we connect a android tv. Then this display was appear in the display list. But now we again reconnect through display code. Now cms searching this display but not found. How can we get this display again in the display list. CMS version 4.2.0.

Please help us to solve this problem.

Thank you.

Ensure that no filter is set.
Also check whether “All Folders” is checked.

Otherwise, the only thing that helps is to look at the logs.