@dr_jkl Are you using the native MacOS WiFi sniffing tools or WireShark alone?

@dr_jkl I am talking about looking at the WIFI packets before negotiation occurs.

I believe you are using a Mac, from what I see above...

https://supportforums.cisco.com/document/75221/wireless-sniffing-using-mac-os-x-106-and-above

@dr_jkl You may want to answer my questions.
What router firmware and version are you running, please?
Have you done any packet captures to see where the authentication negotiation fails?

On the bright side, some of us can connect.
I have had no issues connecting my Omega2+ to my AES encrypted WiFi network that uses an ASUS RT-AC66U running asuswrt-Merlin 380.63.
My WPA Pre-Shared key is 8 characters, all alpha.

What router firmware and version are you running, please?

I installed the b143 firmware using the instructions here:
https://docs.onion.io/omega2-docs/manual-firmware-installation.html

I can confirm that the system can see/write/read from the SD card.

Nice.