@erioho Finally I connect both router. The key point is to set WPA2 instead of WPA3, and activate WPS. WPS will redirect to Onemesh and all done.

Hi all, I have two TPLINK router, AX72 PRO(master) and AX55(slave). I want to join the two routers by onemesh as they are both supported. Both of them are hardware V.1, both updated with latest...