I've gone through all the posts I can find about this and I'm still having no luck. I can control my Roku Ultra with Alexa without issue. But I just bought a TCL Roku TV and Alexa just won't control it. I've disabled and relinked, the Fast TV Start feature is on, and the TV and Echo are on the same 5Ghz network. Whenever I ask Alexa to do something with Roku, she just says "I can't/couldn't xxx right now", like "I couldn't launch Disney+ right now". I'm out of ideas, would love some advice. It's a TCL 50S435 if that makes any difference. And software is up to date, 9.4.2.