Several panes are missing in Remote Desktop Manager and you seem unable to bring them back.
Close Remote Desktop Manager.
In the File Explorer, navigate to %localappdata%\Devolutions.
Copy the RemoteDesktopManager folder on your desktop.
Delete the RemoteDesktopManager folder in %localappdata%\Devolutions.
Restart Remote Desktop Manager.
This will create a new RemoteDesktopManager folder in %localappdata%\Devolutions. When everything is back to normal:
Close Remote Desktop Manager.
Copy the files below from the RemoteDesktopManager folder on your desktop into %localappdata%\Devolutions\RemoteDesktopManager:
RemoteDesktopManager.cfg RemoteDesktopManager.enc RemoteDesktopManager.stv RemoteDesktopManager.ext Connections.db
This action will restore your configuration and your local data source.
Close Remote Desktop Manager.
In the File Explorer, navigate to %localappdata%\Devolutions.
Copy the RemoteDesktopManagerFree folder on your desktop.
Delete the RemoteDesktopManagerFree folder in %localappdata%\Devolutions.
Restart Remote Desktop Manager.
This will create a new RemoteDesktopManagerFree folder in %localappdata%\Devolutions. When everything is back to normal:
Close Remote Desktop Manager.
Copy the files below from the RemoteDesktopManagerFree folder on your desktop into %localappdata%\Devolutions\RemoteDesktopManagerFree:
RemoteDesktopManagerFree.cfg RemoteDesktopManager.enc RemoteDesktopManager.stv RemoteDesktopManagerFree.ext Connections.db
This action will restore your configuration and your local data source.