Additional information about my previous question. Everything seems to be normal again, you see it on the picture. I changed nothing. I suppose this information should come from the IVAO server and perhaps this information was out of service for some time.
I got suddenly back the red label with all IVAO information about my flight. Bevor I had only the magenta a/c symbol and I was not sure, if I am correctly connected to the IVAO server. Of course I had also the IVAO Pilot Client ALTITUDE to check the IVAO connection.