Aggregating Zmodo systems into one

[techposh]

I have 3 retail stores and need to aggregate their streams into one display at my offices.

They are each different models:
ZMD-DD-SBN8
ZMD-DD-SAN8
ZMD-DX-SIN8

Zmodo was really rude and unhelpful, told me I had to use IE to view it and no way to aggregate them. I am hoping this is not the case. I can view them all via the iphone app Zviewer, but no luck on the PC client with either their CMS or Zviewer client for PC using all the same info from the mobile app. I use no-ip for a DNS and have tried both the DNS and the current IP to no avail. Does anyone have experience with this or can reccomend a program that will aggregate them all together?

Thank you so much