You can continue to view and use your event app for at least one year after your event starts but all event apps are closed for editing in the Content Manager 30 days after your event ends. If you need to edit it after that point, just contact support to have the Content Manager unlocked.
This article is for our new Experience Manager.
If you are an EventMobi customer and using manage.eventmobi.com your account is using our Classic Content Manager. If this is the case, please visit support.eventmobi.com