I just got a router. everything is plug in correctly. I am able the login to the new router using the its IP address. but when I login to the new router the IP address for the antminers are not listed. I really don't know what to do or whats going on.
What is the IP address of the new router? Things need to match. For example, if your old setup was working properly and you had never changed anything, it is very likely your old modem/router was providing addresses to your hardware in the 192.168.0.XX range. The S3 uses this same range, so everything would have just worked happily. If you're having problems now, it's very likely the new router from the new ISP is using a different IP range, so it can't see those S3s (which are still using the old 192.168.0.XX address).
I asked some questions above. I really wonder if he has a all in one type modem from ISP. He had a modem and I think it's a slim chance he had a Ethernet cord coming to just one device from a modem.
OP did you have wireless when just had your "modem"? On you "modem" does it have ethernet spots on the back for more then one?
Just trying to see if it's all in one device or truly just a plain modem.