@marcomesias Hi, as per your description, the Movistar router is working in bridge mode, and the C80 is the gateway in the network, so there is only one NAT device in the network now, that is the...

@albione May we know why do you want to downgrade the router firmware to the older version? We will check the resource then to see if we can still get it for you.

@gigit How about you set a static IP address on the NAS, but leave the gateway blank, will that match your requirement?

@Kaspar Thanks a lot for getting back with the valued info. We have reported the issue to the support engineers, they will investigate this further. Just to confirm, can you recall what is the...

@Phansn If the speed is normal when you connect the computer to the router with cable directly, that means the router negotiates with your ISP line fine. We can focus on the Wi-Fi part. Which device...

@WR409 The default login username and password are admin/admin. However, if you changed that to your own, and you don't remember them, you need to reset the router to factory defaults and create the...