Why are my maps empty when viewed as "Collections" in Nearby?

Hi,

I've been trying to get your product to work as a recruitment tool for the University of Wisconsin-Milwaukee. I have made 2 maps and can view both from the web interface (Platial.com, that is). When I try to view my map as a collection on the iPhone app, however, I just get a blank map.

I can view other collections in my area, but my 2 maps just don't seem to work. Any thoughts on why that would be?

The map names are "UWM Tour (Beta)" and "UITS Locations"). I have downloaded the latest update from the App Store, and am currently connected to a wireless network.

Sorry for sending a repeat question, as I have asked this before, but I just really would like to get this up and running to I can present it as a possible tool for our university.

Thanks in advance,
Andy