Google Cast and TuneIn

I can’t get Cast with Tunein to work! I have created a flow where it should start a radio channel when a special event occurs. Nothing happens with any of my Nest devices. Help!!!

Please share the flow.

Chromecast installed?
Homey model?
I can only select a Tunein station when I use the search bar, otherwise the screen is just empty

But it’s all just a guess, while you don’t explain what does not happen and when.
Maybe the the cast cards don’t get fired, and it can be any other flow issues.
Do you use timeline notifications or log cards, to see what a flow really does and doesn’t do?
Hence the request by @Joenoo