Asus RT-AC87U connection to Hub One

[#1]

Hi there!!
I have recently bought an Asus RT-AC87U router to improve our network, but I do not get to connect using the WAN port. When I connect the Asus router using Wan port I receive no signal. I am introducing my user(plusdsl.net)/password correctly but the led on the Asus router is red and no connection.
Does anyone have this router to help me with the configuration?
Thank you in advance!!

[#2]

You do not need to put any plusnet username or password into the Asus, just connect a LAN cable from a LAN port on the Hub One to the WAN port on the Asus.
A quick look on the Asus site, suggests it has a Automatic IP setting, which I would try first.
If that does not work there will be more detailed information on the Asus website.

[#3]

Thanks mate, It worked for my.
Now I have the router configured using one of the LAN ports of the plusnet One Hub.