Unable to mirror to Samsung smart TV or Apple TV 3rd gen. Used to mirror to Apple TV until 2-3 updates ago. Any ideas?

I have an iPhone X and Apple TV (3rd gen). I used to be able to mirror from my phone when I used crunchyroll but the feature is stopped now. My tv is a Samsung smart tv. I’ve tried mirroring to the tv, Apple TV, and using mobile hotspot without success. Any ideas?