I have a Roku Premiere+ device. Software version 9.4.0-build 4190-91. Both my Roku and iPad are connected to the same network. I used the Apple Airplay option in settings to screen mirror my iPad, and it worked great for two days. I use this to watch HBO Max because this is the only way to get HBO Max on my TV (Roku does not have HBO Max channel). On the third day my Roku device could no longer be identified by my iPad for screen mirroring. I have two other Roku Premiere+ devices in my house, and they still showed up. However, after a couple of uses, they can no longer be identified by my iPad. Now none of my Roku devices can be recognized or identified for screen mirroring on any of my Apple devices. All other devices capable of screen mirroring show up just fine. Just not Roku devices. I have updated software, reset all Roku devices, turned Apple Airplay feature on and off. Nothing works. Please help!
See if this post helps. It enabled me to get Airplay working on a Streaming Stick+ and Roku TV when Airplay could not "see" them: