New router can't get an IP address

I have my own modem and my own WiFi router. 

I want to replace my WiFi router.  However, as long as the MAC address is different, the new router cannot get the IP address (even if I release the IP address before I disconnect the cable).  Unfortunately, my new router does not support MAC address cloning. 

Another person seemed to have a similar issue. (cf., https://forums.xfinity.com/conversations/your-home-network/router-cant-get-an-ip-address/602dae9fc5375f08cdf04ae8 )

Is there a solution besides MAC address cloning?  Thanks!