Nighthawk AX2400 RAX30 - unable to passthrough DHCP?

I chatted with Netgear support Level 1, and after having me redo much of the work what I already did a few times, they told me to call for Level 2 support.

Level 2 support had me manually downgrade to the previous firmware version to test the Wireless AP functionality in that version. However, they also asked me to do a factory reset on the router, which seemed odd, since the router setup then forced me to upgrade again and therefore didn't allow testing the old firmware. However, something about downgrading to the older version, at least for a short while, got the Wireless AP mode working as it should in the new firmware version, as well as improved general stability.

Perhaps something happened in the original firmware upgrade that wasn't corrected in any reset or re-install of the same firmware, but it works now, and network DHCP is again able to configure wireless clients as well as wired ones. I would suggest downgrading firmware, whether or not followed by an upgrade again, as a useful technique for troubleshooting.