Usually this happens because you have cloned these systems and these systems are registered using the same ComputerIdentifier for Pulseway.
In order to make sure that all your systems are registered using different identifier for each system, you will need to stop the Pulseway Service and delete the ComputerIdentifier from the system which is used to create the image which is used to clone systems. And then re-create the image.
HKEY_LOCAL_MACHINE\SOFTWARE\MMSOFT Design\PC Monitor\ComputerIdentifier
HKEY_LOCAL_MACHINE\SOFTWARE\MMSOFT Design\PC Monitor\ComputerName
and this file for Linux:
However if the system is up and running, then you will simply need to stop the Pulseway service, delete these registry keys or file for the Linux system and then start the service. The values for these registry keys or pulseway.id file on the Linux system will be regenerated automatically.
In order to delete values for these registry keys on Windows system please use these commands:
Set-ItemProperty -Path "HKLM:\Software\MMSOFT Design\PC Monitor\" -Name ComputerIdentifier -Value ""
Set-ItemProperty -Path "HKLM:\Software\MMSOFT Design\PC Monitor\" -Name ComputerName -Value ""
systemctl restart pulseway
Note: You may run these commands from the Pulseway WebApp.