HomeKit isn’t connecting to my vizio tv nor any other device.

Hi there romar274,

It sounds like you're unable to add any accessories to the Home app, including your Vizio TV. We're glad you've joined us in Apple Support Communities, and we can provide some guidance. 

To start, you'll want to make sure that your accessories support HomeKit or AirPlay 2. The compatible VIZIO models are as follows:

• "VIZIO OLED (2020)*
• VIZIO P-Series Quantum X (2019, 2020)*
• VIZIO P-Series Quantum (2018, 2019, 2020)*
• VIZIO P-Series (2016, 2017, 2018)
• VIZIO M-Series Quantum (2019, 2020)*
• VIZIO M-Series (2016, 2017, 2018)
• VIZIO E-Series (2016, 2017, and 2018 UHD models)
• VIZIO V-Series (2019, 2020)*
• VIZIO D-Series (2018, 2019)"

Have a look at this link to learn which devices are compatible:

iOS - Home Accessories - Apple

If your TV and other devices appear to be compatible, you'll want to follow the remaining guidance in the 'If you can't add an accessory' section of this support article:

Add a HomeKit accessory to the Home app

We hope this information is helpful. Let us know how it goes.

Cheers.

I have this problem, too. And yes, I have verified my TV's compatibility. The TV was once on the HomeKit app, but now it isn't, and adding to the Home app just doesn't work. I've scanned the code that appears on the screen, so I've gotten that far. All firmware is up-to-date. I have the latest iOS as of this writing. So what gives?