I submitted a map a while ago and noticed that not only has that map not gone up for upload, but the total number of maps hasn't increased at all, or at least on my end.
The last time I tried submitting a map to Stardock's hosting service, it took over a month to get approved, by which time a patch had rendered my submission obsolete anyways (this was for Sins of a Solar Empire). Sounds like things haven't improved since then. I'd recommend going with a third party file hosting service.