There is no way to delete device tokens, even for devices that uninstalled your app.
We keep device tokens valid so that if your app is reinstalled on the same device in the future, we can reassign the device token for convenience.
Please note that you will not be charged for inactive devices. Pushy Pro only charges for active device utilization. Devices automatically become inactive on the 1st of every calendar month, and will remain inactive unless they reconnect in the current monthly period.
Therefore, there is no need to manage devices as we only bill you for active ones.
Finally, if you really want to delete devices, the only option is to delete and re-create your app in the Dashboard. Please note that doing so will remove all devices, pending notifications, and invalidate your Secret API Key.