Hello Christof Schramm ,
The Excel Dimension Editor which you are using has been updated with 2023R1. The pop-up message will appear when you load up if the add-in is activated.
Please ignore as this doesn't cause any functionality issue with the add-in.
If you install SpaceClaim 2023R1, you will see the updated add-in as seen in the attached image.
You are navigating away from the AIS Discovery experience