If you changed the date of your event and existing tickets were not updated automatically, don't worry, it's expected behavior. Existing customers who have already bought tickets and received a PDF file will still have the old version of the ticket. However, new customers will automatically receive the updated information when they purchase tickets.
To resend an updated ticket with the new event date to your existing attendees, follow these steps:
Go to the Attendees page of your event.
Select all existing attendees.
Click the "(Re)-Send ticket emails" option.
For more detailed guidance, you can refer to the steps found in this article: Resending Tickets to Attendees
Alternatively, you can resend the updated ticket to individual customers. Simply click their name from the Attendees page, which will take you to the attendee information page. Scroll down to the bottom and click “Re-send ticket.”
If you have any further questions or need assistance, feel free to reach out!