Same problem here.
None of my devices names show up under "System Log - Wireless Log"
Only MAC addresses are displayed
Tried deleting the cache for the webpage, tried a different browser, tried factory defaults and setting up the router from scratch.
None worked.
https://www.asus.com/networking-iot-servers/wifi-routers/asus-gaming-routers/rt-ax92u/helpdesk_bios/?model2Name=RT-AX92U
Finally, a new version is out !
3.0.0.4.388.22525