Nighthawk X6S EX8000 problems

I do have a Nighthawk X6S Tri-Band Mesh Extender, connected to my old Nighthawk X6 R8000. I have set the Extender a couple of months ago, and it was working ok, then it started to freeze very often, and as of today I have to cycle power on that thing every couple of hours. Even the wired connected devices will drop. When that happens I can still connect to the X6 R8000. I have the X6S EX8000 connetced to 5G and 2G chennels, and I am using the same SSID on the Router and Extender. I do have the Auto Firmware Update On, so I wonder if it is a bug or something similar on this Firmware version.

Anyone have similar issues? Any tips for me?

Extender Firmware V1.0.1.192

Router Firmware V1.0.4.46_10.1.63

Thanks!!!