@Ru55all HW vesrion is printed on the device bottom sticker. Smart Connect should be disabled to be able to control 2.4GHz and 5GHz radios separately:

@Leonardo_Ramos The feature has been discontinued according to this FAQ.

@Andrea_22 You're behind a CG-NAT - that's the reason you can't reach your modem from outside your network (check the fourth IP range in my previous post). Your only option is to contact your ISP and...

@KD276 This device is provided by your ISP - any questions regarding its operation should be routed to your ISP. In general the WAN port is used when the modem operates as wireless router - when you...

@Andrea_22 According to your WebGUI you should try to access the modem at port 8080 via http. Also your modem WAN IP address has to be with a public IP address, i.e. not within the following IP...

@pajtaz Well, that's a valid point and a possible workaround for your issue. If the WDR3600 fails in time, you'll know what you should do. The other approach would be to downgrad the FW to an earlier...