The problem is the new "more secure" protocol - WPA3. It's damn secure as I even my devices can't connect to it. I wonder if Apple gets paid by mobile network providers for saving them data bandwidth.

iOS15 replaced WiFi protocol WPA2 with more secure WPA3. I'm sure you'll "appreciate" that you can now use "easier to remember passwords". Actually NOT - as I can't connect to it anymore. I've been working in IT security for quite some time - good security is useless if it breaks 90% of connectivity. I can't use iPhone hotspot with my car any more, neither with not-so-old laptops. Pretty crap if you can't downgrade it in the hotspot configuration!