800xA 5.0 witn melody -> "ebmelodyserver.exe" doesn't work

Hello,
I'm working on the 800xA 5.0 system with melody, I have a problem on a process of a connenctivity server, all of a sudden the process "ebmelodyserver.exe" does not work, so that I can no longer see the system's cpu. Fortunately, the system is redundant. I also tried to restart the machine and to force the process manually. It remains in service for a while and then stops. Can someone help me?

Thank you