Miracast for Screen Mirroring

I’ve never had a problem with a text stuff figuring it out and getting it to do what I want. But for the life of me I cannot get this to work and cast onto my TV. I have an iPhone and a Roku TV and it’s supposed to be compatible, once I hit cast the TV goes to a blank screen and that’s it. All access has been granted everywhere it should be and yet I cannot get it to work. Not happy with this at all.

I can not get sound on the tv. The mirror happens, what shows on the phone is on the television screen, BUT THE SOUND IS STILL ON THE PHONE. If this does not work, I request a refund. I want the sound from the program to come out of the television speakers.

Bought a Goodee projector a few days ago, only issue is the app never connects to the projector I’ve disconnected my wifi turned off my phone and restarted the projector and still nothing I had contacted customer service on Tuesday and still haven’t heard back. I’ve also tried it on a different phone, thinking it could just be mine unfortunately it was not. I really wanted it to work :( very disappointed.