Having the same issue.
Karma running, accepting connections and providing IP addresses on the 192.168.2.x segment.
However, the wlan0 interface shows no IP address.
So the connected devices, through Karma, are getting a 192.168.2.x address with a default router of 192.168.2.1 but nothing is routing through on the Pineapple.
The GUI has no configuration options for the karma IP addresses, so not sure what to try...