Hi @Steve_Luckau, we’re happy to help with this. You’ve provided some good details on your setup, but I need a few more to get started.
What OS/version are you running on your Core?
What version/build of Roon?
Have you updated to the most recent version of RoonRemote in the PlayStore?
How long has this been going on?
Do you get any particular error messages before or as the connection is lost?