I think I've having the same issue......I keep getting devices losing wifi, then the password won't work to reconnect. Windows machine will reconnect if I just turn off wifi and turn it back on, but apple devices won't reconnect unless I reset the node or router.I did a dirty update from 3.0.0.4.386_46061, which ran for months without issue. Same lines in my log. Router is working fine after updating, but the node (hard-wired bachkhaul) won't let any WiFi clients connect (they say incorrect password). Tried factory resetting the node but no improvement.
Should I just factory reset the router as well and start from scratch? Ugh.