Why is it all the instructions given IN Google Home, are ACTUALLY different when you attempt to go there and try them?
Why is it that CHROMECAST devices work perfectly ONCE, and then you maybe want to try it again the next day (or hour... or minute...), it requires, rebooting, resetting, refinding and generally giving up because it never works twice?
Why is the GOOGLE claim to offer help and assistance, but in reality, only offer FAQs that they think will help but never answer any of the problems you are faced with???
Why is it GOOGLE are never available to help? ANYTIME???
Why is it I bother when were doomed to failure from the start?
Sorry about your support drama.
I'm a volunteer and fellow Chromecast user here.
Typically, with the Chromecast not connecting after a time it will be from one of the following-
Power. Try to use the original power adapter to the wall.
Network. Move your Chromecast closer to your router. Reboot your TV, Router and Chromecast.
TV. Experiment using a different TV or HDMI input. Update TV firmware. Check that any power saving modes on the TV are set to off.
Chromecast Device: could be a bad unit. It happens and if under warranty, return it. Try a full factory reset.
Make sure the Home app is updated to the most current version, clear cache and same with all related apps such as Netflix etc.