You have to publish an event first to make it ready for ticket-purchasing. Otherwise, your prospective customers will be led to a warning page.
How to publish your event
When all the event and ticket details have been finalized, to publish the event, under “Event” click on “Dashboard.”
On the main dashboard, click on “Publish.”
A pop-up notification will appear. If you want to publish the event, click on “Ok.”
You may now share the event to your prospective attendees, and they will be led to the live event page to purchase tickets.