Our Roku Premier 3920RW with OS 10.5 4201-91 has completely stopped appearing in our Air Play command center (or any other app or location) from every one of our our iPhones (6s, SE, XS, 12 pro max). We have updated all devices, factory reset with no success. We can still control the device through our phone app so know it is connected but cannot cast content from any app outside the Roku app. This is our most needed and dear function for the holidays so any help is truly appreciated. Thank you!