By default, ticket sales automatically end as soon as your event ends. This is based on the end date you have set for your event.
You can set ticket sale end dates on individual ticket types, or, stop sales for an entire event. If you have duplicated an event, these settings will have carried over if they were applied to the original event.
Amend or remove the sales end date on your ticket type
If your ticket type(s) is 'greyed out', cannot be purchased, and has a subheading sales ended x DATE you will need to amend or remove a ticket sales end date in your ticket type settings.
Mange your event via events
Navigate to tickets > ticket types
Click settings βοΈ of your ticket type(s)
Change, or clear, the ticket sales end field
Click save
Remove a stop sales indicator on your event
If your event page's "get tickets" button is 'greyed out', cannot be clicked, and a heading sales have stopped appears then you will need to "resume sales"
Manage your event
Click the "..." menu in the top right
Select resume sales