Display status not up-to-date

Hello,

i have a display with Windows Client installed. All works fine but, if I change anything in my layout the display won’t update. In the CMS the display ist marked as connected, and the last access date is up-to-date. However at the status I have the cloud symbol. I have a second Display in my office. Here is all fine.

Anybody an idea?

Thx

Greetings Peter