I have tried to reset the router to factory default by holding the small black button on the back. I've tried rebooting the router many times. I have also tried many firmware releases:
RT-AC86U_386.5_alpha2-g4fa87261ad
RT-AX86U_386.4_0 2
RT-AX86U_386.4_0
RT-AX86U_386.3_2
All have failed to...