I have plugged my modem up the new one
Can you clarify what you mean by this? What is "my modem" referring to, and what is "the new one"?
and tried to reset it the light comes on but that's just about it every now and then the all the other lights come on but I can't seem to connect to Wi-Fi
How did you "reset" the device? Is this something you were advised to do by customer support?
What light is it you're referring to that comes on, and on what unit/device?
It's been a while since we last heard from you, so we will close this thread. If you still have concerns, please start a new thread and include a detailed explanation so we can better assist you.