For ensuring the connections between the StageWave Server App and the StageWave Musicians App check this:

1. Verify that both phone and computer are connected to it local network.
2. Verify that the computer is connected to a LAN port in the Router.
3. Verify that the computer does not have any firewall activated that could block the connection to the server.
4. Verify that both devices, phone and computer, have the latest versions of the StageWave apps.
5. Uninstall and reinstall the StageWave app on the musicians device.