Panasonic FP Web-Server2 - Problems Finding an FP Web-Server Unit or Unable to Send Configuration

Additional information
188 FP Web-Server V2.810 EN
20.7.2 Problems finding an FP Web-Server unit or unable to send configuration
If with FP Web Configurator Tool, you cannot:
 find ([Find]) or select (double-click) an FP Web-Server unit
 send the configuration ([Send])
 send an HTML file ([Send File])