Smart Tags does not remove/update the tags even when the stock quantity goes to zero!
Ensure that the tag(s) has not been created manually previously or created by another app.
Smart Tags does not remove existing tags in order not to interfere with other apps or your existing workflow.
Simply remove previously created tags that you want Smart Tags to automatically manage for you.
Contact us if you need help to remove your existing tags in bulk, we would be happy to assist you.