Thanks. That fixed the problem. Roon.exe wasn’t checked in allowed app through firewall. I can now see my Core on my iPad.
Robert F stopped by. When I reconnected everything including the EtherREGEN switch and AfterDark Bridge I couldn’t see my Roon Core. I had to delete all but one raatserver and one roonappliance, reload my iPad remote and then I could see my Roon Core. Back up and running.