In the platform, the Dashboard (Play>>Dashboard) notifies you of any issues concerning the Set-Up of your event. When you login as an admin, you may be prompted to fix current issues:
The left hand column lets you know where the issue takes place, the middle column informs you of what the issue is, and the right lets you know how critical the matter is.
The errors can be found anywhere in the event setup.
When all the prompts have been satisfied, the dashboard will appear like this: