Hi there! I recently bought the Archer C6 and it keeps losing internet connection (every one or two hours). The internet led goes orange and I have to turn off /on the router so it start working again

I have 2 Archer C6 routers that I can't seem to get working with the new Onemesh functionality added in the latest firmware update. Prior to the second C6 I had the following arrangement (picture 1):

The new update which includes WPA3 and OneMesh has been released only for the US version of Archer C6, when will the EU version get it?

Wondering why bandwidth control is not available, when it says on eu archer c6 webpage. When contacted support they said it disabled and might be available in future. But Why? And Previously I owned D