@avniel 

I am having the same issue.  It is erratic. Sometimes it works and other times I get the same message to contact support.  I have 2 kc200 and 3 chromecast devices and the same issues occur on all 3 devices. Very tempermental IMO.

https://commandslibrary.com/kasa-cam-commands-google-assistant/

Kasa Cam control command:

Now Google has allowed you to stream your Kasa Cam on your Chromecast TV, Google Home Hub which has a screen and Lenovo Smart Display. Please find the simple command below for how to:

1. Activate Google Assistant:

        a. "Hey Google"

        b. "Hi Google"

        c. "Ok Google"

2. State your Command:

        a. Cast

        b. Play

        c. Show

        d. Stream

        e. Stop (Casting/Playing/Showing/Streaming)

3. State your Device Name

4. State your TV Name

Example:

"Hey Google Cast My Outdoor Camera on the Bedroom TV"

"Hey Google Stop Casting on the Bedroom TV"

“Hey Google Show My Front Door Camera on Lenovo smart display”

“Hey Google Show My Front Door Camera” (When work with Google Home Hub which has a screen)

@avniel 

Hi, please use the correct command to stream to Chromecast. Currently, the Kasa cameras don’t support “camera on/off” command due to possible security risks. For example, an intruder could potentially shut off your cameras with a simple command.

For the related spec information of the Google Home Hub and the Lenovo smart display, you can refer to the link: https://www.cnet.com/reviews/google-home-hub-review/ 

@doimec 

Hi, watching the live feed of Kasa cameras through Google Assistant will use your internet traffic as it’s a Cloud-to-Cloud service. When you can't watch the video on chromecast, please make sure your internet is working, and make sure the signal strength is good. Then check whether you can see the live view on the Kasa app remotely or not.

@Stella.Q  I didnt try to On or Off, I only want to stream and watch live feed and it doesnt work, only on my hub max its working, the other devices its not, chromecast and sony TV with google assistant built in

@Stella.Q 

Hi thank you for the feedback. 

My internet is working fine as I have other services running normally and ppl using the interent with no interuption in services while I am trying to get the KC200 to stream thrru Chromecast.  The KASA apps works fine also.  The only issue is streaming the KC200 thru Chromecast and only get the  message to contact support.

@avniel 

Hi,

What's the error message and phenomenon when you can't stream the live view? Please send us a picture if there is one.

What's the camera's hardware version, firmware version and MAC address? 

Besides, please also tell us the model number of the device that can't stream the live view.

Good day.

@doimec

Having the exact same problem, Have 3 camera and always seems one that wont stream and get the same message, Talk to Kasa support and they were useless and still have problem. I unlinked the tp kasa account frm google assistant and reconnected it and now its a differant camera that wont stream. 

@PaulatThornwood 

Thanks for the feedback. That's were I am now. Dealing with tech support to no avail. I have done all you mentioned. Once I reconnect works in one camera and then nothing. Doesnt work anymore and get same message to contact support. Today I sent some version info on my devices. No response yet.

Thanks again. 

@PaulatThornwood @doimec 

Hi,

We were working together with google about this issue, and we have made some changes from our side, please try to restart the camera and Chromecast device and check if streaming works.

Good day.