Homey Pro 2023 Alexa + Google stop working


I have a homey Pro 2023, connected to Amazon Alexa and Google Home. All worked fine until last Friday. It was working since years (Pro 2023, 02.2023, Old Homey ~2021)

Every morning none of the “Assistants” work, until I restart Homey.

Alexa and Google says “Device not reachable”

It didn’t change anything I know. No new devices etc…

A homey restart OR a router (OpenWrt) restart fixes it temporarily. I don’t get it. Are there any logs I on the side of the voice assistants?