doesn't cast to google home speakers

Hi ​@piotrartist !

Try unplug the power cord from your speaker or display.

Leave it unplugged for one minute.

Plug the power cord back in.

or try this

Why is my Google speaker not working?

• Unplug the power cord from your Google Home Mini for a minute > Plug back in.
• Open the Google Home app > Settings. Under Home features, tap Privacy > Home activity.
• Identify the most recent command that generated a failed response.
• Factory reset your Google Home Mini device and set it up.

Now the music plays from the speakers but it does not synchronise with my phone.

Doesn't cast. Tried for last five hours.  Just spins says almost there and than drops. 

Why is my Google Home not casting?

• Make sure your Chromecast is within 15 - 20 ft (4 - 6 m) of the Wi-Fi router if possible.
• Turn on Wi-Fi and Bluetooth on your phone or tablet, if not already turned on.
• Turn off mobile/cellular data.
• Reboot your router.
• Reboot Chromecast by removing the power cable, then reconnect it.
• Reboot your phone or tablet.

Tried this, cast for a little while than stopped and can't connect for last 2 hours.