I am preparing to install DD-WRT on a second Archer C9 (hardware V2).  I have registered with TP-Link's DDNS service, and I would like to add that info to the DD-WRT router to handle that specific traffic.  

Does anyone know the specific info needed to do so?  I believe all I need is TP-Link's DDNS server, and the URL I registered with TP-Link, plus my account credentials.  If that is all, what is TP-Link's DDNS server address?

Thank you.