I am using the DIR-880L router from D-Link, however I cannot get it to use DDNS.

It's asking me for the following:
Server Address: (I've filled it with api.dynu.com)
Host Name: (I've put in my Domain)
User Name: (I've used the username that I use to access this website)
Password: (The password that I pair with the above user name)
Time Out: (I've left it at the default, 24 hours)

I must warn you that I'm not very tech savvy so I may not fully understand, but I will do my best. Please help me. Thank you.

The settings you have done are correct. Were you able to get the IP address updated? If not, what error message are you getting?

Did this get solved??? I'm trying to configure a D-Link router now.
Thanks