@Jarro Keep the satelitte router closer to your main router and use the FW releases I posted to achieve what you want.

An option to be able to disable this feature has been requested over a year ago - here.

@pcakhilnadh Try setting your main router DHCP server start IP 192.168.33.2 end IP 192.168.33.100 and set Archer C7 with IP address 192.168.33.254 (and its DHCP server off). Restart Archer C7 and...

@D3C0D3R Try changing the ethernet cable between your ONU and C6 (Cat 6A ?) with the cable which comes in the router kit and test if there's any difference. If that doesn't help just work with your...

@FMart To reset the RE press the reset button for about 10 seconds. After successful reset use this video guide for configuring the RE.

@byrallier You can walk though this guide for positioning your REs for optimal performance and reception.