Hi there and welcome to the community. This isn't actually a problem, see the actual launchbox database is only updated once a day, so if your submissions have been successful they will be rolled into the update for that day, i believe it is 12am US time, so if it was accepted today the info won't be available until tomorrow. Also you will have to update your local metadata, you can do this simply by trying to add a game with no current data, if there is new metadata to be downloaded you will be prompted to do so.
Hope that helps.