Hi @MareinKnings,
I’m not entirely sure if this is what you are seeing here, but I found this bug report ([AC-2448] - Ecosystem Jira) via this other thread (How to change App System user name).
Is it true that the “app system name” is the one from the app descriptor? Maybe not the current one but a name that has been used in the past?
Based on this comment by Joe ([AC-2448] - Ecosystem Jira), it looks like there is a way to rename the app to have a friendlier name.
Let us know,
Caterina