User activities not shown to administrator

Dear community,

I am using Nextcloud Snap with Nextcloud 19.02 on my Ubuntu server.
The nextcloud snap is running in a Plesk webspace and so far it is running well.
Unfortunately the users activities are not seen by the administrator.
I have also downloaded and tried the app for auditing but it hasn’t changed a bit on the shown activities.

Is there any configuration that needs to be done in order to show all the activities to the admins?
I have looked up a lot of threads but cannot find a solution for this.
Does anyone have an idea why this is not working as it should?

Thanks for your help.
Best regards, John