So we can better assist you, please provide a brief description of your current setup using this link as a guide.
Make sure to describe your network configuration/topology, including any networking hardware currently in use, so we can have a clear understanding of how your devices are communicating.
Were there any changes to your setup around the time this started happening? Are other remotes working okay?
I still have the same problem with remote Roon. I use an iPhone 11 in sw 14.1 version. I tried cancelling the program, installing it again. The connection is in Wi-Fi. My core Roon is a mac book pro with cataline 10,15.6
Thanks for those additional details! Can you please try to uninstall the Roon app, reboot your iOS device and then reinstall the Roon app from the iOS App Store? Does that help with this issue?