can't connect my air play with roku tv

If AirPlay or screen mirroring isn’t working on your device - Apple Support

Thanks for the posts.

Please be aware that Airplay will be supported on the following Roku devices on OS 9.4 as outlined in our Support page here: 

Roku TV™ 

 Axxxx, Cxxxx, CxxGB, 7xxxx 

 Roku Streambar™

 9102x

 Roku Smart Soundbar 

 9101x, 9100x

 Roku Ultra

 4800x, 4670x, 4661x, 4662x, 4660x, 4640x 

 Roku Premiere

 4630x, 4620x, 3920x 

 Roku Streaming Stick®+ 

 3811x, 3810x

If you do not see Airplay on the above devices, please be patient as we are working hard on releasing Airplay to the above mentioned devices and it may not be readily available.