Directv Stream Device C71KW-400 connected to Vizio P75-F1....HDR switch is off

Ralphie, thank you for getting in touch with us. The device you're reporting issues with figures is a Mini-Genie in our system. However, you're letting us know it is a Stream issue. Could you provide us with more details?
Claudia, DIRECTV Community Specialist

Check your Vizio TV menu and see if your HDR is turned on. I understand some Visio TVs have the switch and others don't. 

Yah I have to turn the HDR on with my Samsung TV to enable HDR on my Dtv Stream box. Samsung calls is "input signal plus"

Thanks for the responses. Vizio P75-F1 sets its HDR support by each HDMI input channel.  Mine is set to support HDR on HDMI-5 where I have the Directv Stream device (C71KW-400) plugged.  In setup mode to identify my television for the stream device I am given only a list of video resolution levels.  My Vizio's refresh rate is 100Hz / 120Hz which are not available in the stream device setup (60Hz or less). Device setup screen says my TV doesn't support HDR.....It certainly does support HDR....

I am using this device for Directv Stream service...not satellite service.  I don't know what a "Mini-Genie" is as I purchased this on eBay where it is listed as a Directv Stream device.