The application did not exit. Connection over the network is successful. It is currently showing a black screen („Display Off). This can have two reasons:
1. Is the additional display detached from Windows Desktop? Please check Windows Display Control Panel. If detached, then it can be attached for mirroring the existing display or extending the desktop by this additional display.
2. Possibly an error has occured. Maybe an incompatible product (e.g. splashtop WiredX Display) is installed?
Please also check chapter „Troubleshooting“ in the instruction manual https://spacedesk.net/user-manual/