This happens because you create the notification again and again
I'm not familiar with that extension, probably @Anke or @Ulrich_Bien can help how to update an existing notification?
In case it is not possible, try
Taifun
This happens because you create the notification again and again
I'm not familiar with that extension, probably @Anke or @Ulrich_Bien can help how to update an existing notification?
In case it is not possible, try
Taifun