If you are unable to publish, there are a few possible causes:
1) Make sure that you have content in your project.
Check this by going to Project --> Edit Project. If you don't have anything in this first section, "Content," then you need to add some work(s).
2) Make sure that you've filled out the required fields under Settings.
Check this by going to Project --> Edit Project --> Settings. Certain fields on this page (Creative Fields, Project Tags, and Project Description) are required in order to publish.
3) Make sure you didn't set your project to "private."
Go to Settings --> Project Visible To. Click "edit" to change the settings.
If your problem isn't described above, please contact support for more help.