My Chromecast integration seems to not be working again. It discovers my devices, i check them, and they're available to use in rules. But they don't work for some reason. It worked last week but now they're not speaking notifications when the door opens or locks are unlocked etc. Any idea what could be wrong?
It's a known issue, some people use the app Chromecast Helper for that.
Try clicking initialize on the devices that aren't working, it should be probably solve it.