You never know, it could be.
But I think it is a bit early to jump to that conclusion, because so far what you've shown me don't really match up with what you say you've done.
I think you should reset the router to the factory default settings and start over completely because something isn't right. (Consult the manual on how to reset the router.)
Before you reset, power off the modem and let it stay off.
Set your network interface to automatically get an IP instead of the manual setup.
Make sure the cable between the modem and the router is connected properly. It should be plugged in to the router's WAN port.
When the router is back up after the reset, let it configure what ever basic settings it want to configure.
Then set the modem to automatically obtain a WAN IP and configure it to clone a MAC address.
Tell it to use this MAC address:
00-0F-EA-56-3E-C9
Make sure the settings are saved and applied and then turn on the modem again.
Give it a few minutes, if the router still isn't getting a connection power it off/on and wait a few minutes again.
If it still don't work you can start considering whether the router might be broken.