Anyone have any tips?

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I have a new Vizio P quantum, which requires you to go to each input and turn on full UHD color, so did that, then I went into the settings of the Mi Box S and changed the display to 4K@60hz & 10bit color, also changed "HDR to SDR" to off (to make sure the box wasn't trying to turn HDR content to SDR) restarted the box and the TV. On the youtube app on the mi box, I can get 4K no problem, but I have tried about 5-6 different videos that have HDR and when i hit the info button on the tv remote it says normal color mode, not HDR. I read a post somewhere that said they had to factory reset the Mi box s to get it to activate, but I would prefer not having to set it all up again.

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Thanks for any help!