After the 1.0.4 update, you could no longer add new entries. It disappeared from the catalog shortly after that. I suspect they're working on the issue.
Personally, I think they shouldn't allow you to add new entries until they get some sort of sync/backup. I've seen too many people who think that their critical SplashID data is protected by the Palm backup process. Right now it's really a 'SplashID display' app - it's not ready to have new information put in it.