JRiver will most likely look into this issue as soon as (the final) ios11 will be released, since putting resources into fixing compatibility issues with beta releases can be a waste of time.
Started using Panel instead.... not nearly as good as JRemote, but at least I have regained control... even multiple zones...
Panel is a web app.https://yabb.jriver.com/interact/index.php?topic=105883.0
The issue with JRemote with IOS 11, seems to be fixed with the latest IOS Beta update! Great news.
Is it safe to update to iOS 11? Does JRemote work with the final iOS 11 release? Thanks!