If your participants are getting a message that your SignUp isn't ready yet, or you're not seeing the active Organizer view navigation bar (shown below), your SignUp is likely still in Planning mode -- all the planning steps are not completed so the SignUp is not live yet..
SignUps still in Planning mode will show a red triangle icon in the Dashboard Status View. When you complete all the planning steps, your SignUp will be active and ready for participants to choose their spots, and the triangle will go away.
It's easy to finish the Planning steps:
Open your SignUp to the Organizer view by clicking on the SignUp Title Then, finish each of the Planning steps by clicking the Next button at the top of the screen until you arrive at step 4.
On the final screen, Step 4, the setup is complete -- your SignUp is now active, and you can now invite your participants. You will also see the active Organizer view navigation bar when you next enter the Signup.
For a quick video tour of all your Organizer views and options, please click here: Managing your SignUp