I have my Sonos controller on several iOS devices but after the most recent Sonos update I cannot start the Sonos Controller on my iPad with iOS 9.3.5. (it's an older iPad and iOS 9.3.5 is the most recent iOS for that device). I can start Sonos controller on my iPhone iOS 11.0.3 and then the iPad with iOS 9.3.5. picks that up and I can then continue to use the iPad with Sonos controller to choose music and so on. Not a huge thing and I have a work around but something is not working as it should, the Sonos 8.1 Software release notes say iOS 9 and higher. Can you let me know how to fix the problem?