Which fields are you trying to change?I tried in some instance here and all is working fine. Is it for content fields? delivery properties? Target segment? Else just try to change multiple things to see if the button appears

Good Morning from Adobe Basel / Switzerland

Good evening from Adobe Basel / Switzerland

Where are you based? i.e. which country

If you already have a license on Campaign Standard, you normally have a STAGE and PROD instance.Then you could test on STAGE. If you don't have ACS, you may need to check with the Adobe Sales to get access to a demo instance.

Hi Micha,there is no general E-Mail address.It also depends on what you exactly need.If you know what needs to be done (e.g. setup affinity) - just raise a ticket in the Admin Console.If you need "help" - contact the Adobe CSM / account executive to get the right contacts (Deliverability support may...

If you have contacts on All hierarchy level, then an A user indeed can target them.Indeed not what you would expect most of the time

What you can do is do implement a technical workflow for this.This can lookup the org unit via a reconciliation activity and then you can assign it in Update Data

Normally sending should work without further configuration as default config already enables Email server etc.Does the email show as sent?What is the status of the delivery logs?

Unfortunately that's the only 2 options available for now.Custom targetData fields can't be stored in broadLog in ACS for now