Can someone here direct me to the Dahua registration page for new nvr?

Just got a Dahua nvr416-4ks2/L nvr. I will not be using my cell phone to view it ever. It just stays in the house recording 24/7. I think, from my research, that dmss is required to register the units' serial number? Is there any way I can register it with Dahua just by going to a website and plugging in the serial number? It's still in the box and I will be installing it later today, but want to get my ducks in a row first.

Thanks to the forum in advance.

Well, several hours after...

Can someone here direct me to the Dahua registration page for new nvr?