I'm sorry to hear that Belkin did not help you with your problem. Let me help you with your concern instead.
Here's what we need to do:
Start by resetting the router to factory default - you just need to press and hold the rest button on the router for about 30 seconds (with the power on).
1.) Disconnect the Belkin router from your modem , connect a PC to the router (use the LAN port - either port 1 to 4).
2.) Open Internet browser - clear the address bar and type in http://192.168.2.1
, press enter. It will ask you for a password , do not type anything just press Submit. You should be able to access the router's web interface.
The router's web interface should like this (depending on the model #):
3.) Go to LAN settings. Change the router's IP address to 10.10.10.1 (this will be the new IP address of your router) . Apply the changes. Once youapply the changes, you can access the router using the new IP - http://10.10.10.1
4.) Reconnect your modem - router and computers. Reboot device by switching off the modem , router and PC.
5.) Power up the modem first. Wait for about 2 minutes, power up the router and restart your PC.
The steps I gave is applicable if your modem is not on bridge mode. If your modem is on bridge mode (meaning it requires a username and password from your ISP) - access again the router by going to http://10.10.10.1
and do the following:
Click Internet WAN > Connection Type and select PPPOE. Type the username and password from your ISP. Apply the settings. Reboot the modem and router.
I hope that helps.
Good luck and have a nice day!