Rosewill RNX-N4

I attempted to use the router auto-reconnect search as well as recording a manual reconnect to acquire a new IP address from my ISP. I was unsuccessful. I believe I need to change my router's MAC address in order to receive a new IP address from my ISP. Is it possible to use Jdownloader's "record reconnect" feature to change the MAC address of a router? If not, could you please consider adding the Rosewill RNX-N4 to the router list in a future update
Thank you

Anyone?