Hello @CampaignerForLife
AC does not update the opt-out status. So it can have multiple token for the same customers.
This situation arises when a user operates multiple devices.
The approach depends entirely on the use case, do you want to target the customer or the device?
For instance, banking and ride-sharing apps typically send push notifications to the customer, ensuring that all associated devices receive the notification.
However, targeting a specific device can present challenges. For example, what if push notifications are disabled on the most recently registered device?