have you had any luck? I've had a very similar symptom, my SSIDs don't stick, even the security parameters

Model : Archer C3200 Hardware Version : Firmware Version : 0.9.1 0.1 v004b.0 Build 170707 Rel.58427n ISP : Charter I just bought the router and I tried to rename the wireless networks (2.4g/5g/5g)...