How to get r7000 working with sky broadband

Hi

sorry I am useless but want to learn!!

i want to replace my sky broadband modem/router ER115 with my Netgear nighthawk R7000.

i got my username and password using Wireshark. But when it comes to the interenet test it doesn’t connect just has orange light.

at the minute I have switched off the wireless on ER115 and using the R7000 as a wireless access point.

if someone could talk me through step by step that would be great as I am pulling my hair out.

thanks