Why does my WiFi connection say Hidden network? This is something that changed from last night to today! Does anyone know?

See this Apple article: Recommended settings for Wi-Fi routers and access points

https://support.apple.com/en-us/HT202068

Scroll to Hidden network.

I don't think you should worry about it.

Whoever has access to the router can provide the answer. Probably accidentally changed the button?

It seems to me that the change does not happen automatically.

But keep in mind that due to an automatic firmware update of the router, it might happen.

Here I have set the router firmware update automatically, after an automatic update the Wi-Fi network password is set to default (fortunately only happens twice a year).

Maybe keep an eye on it when it happens again.

Thanks for your extensive feedback & you're welcome.

to you too & yes stay save 🙏