Unable to get remotes to reliably connect to Core

[Rugby (aka Daniel or Big Dan)]

You might try this, not saying it will work for you or the iPad, but maybe on your note…

Android can't find Roon Core

For the umpteenth time my Android phone would not connect, so I went into help and instead of of putting the IP address of my Core I put 255.255.255.255 and it found it immediately.