cannot contact server: HomeAssistant.OnboardingAuthError code 1
i tried direct contact through IP adres but no result.
Not in any way resolved !!
This is a real problem I too am having with the companion app trying to connect with Tailscale connected HA instances.
Previously working they now fail to connect with this error, presumably from some unknown update that has happened recently.
Same response as the other person that started thus thread - you have supplied insufficient information for troubleshooting.
Wild guess: you have networking problems. Look in the logs. Search the forums as at least two other people have reported similar issues in the last few hours. Help us help you.