How to mirror an iPad screen to a Roku TV.
What should I do if my TV no longer appears in the "Screen Mirroring" list, even though it used to work?
Does your Roku support AirPlay directly? Make sure both your Roku and iPad are updated to the latest version. Also, restart your router. Mirroring often fails if one of the devices is connected to a VPN, so ensure that all VPNs are turned off.
Alternatively, you can use a mirroring app like DoCast https://apps.apple.com/us/app/docast-cast-and-mirror-to-tv/id6446948344. Just download it from the App Store onto your iPad and follow the instructions. The mirroring quality is quite high and without delays.
