Serviio on Synology NAS versus Panasonic connection trouble

Hi,
could you please help me with Serviio troubles on Synology NAS - software DSM 4.0?
I have installed Java7, at the end was some error: not successfull, try again
Anyway Serviio is instaled /I do not know, if it would be possible without right Java instalation, what do you think?/

In serviio console I see Panasonic television in network - as green.
Also serviio is "running"
If I try to see Media servers on my TV, Synology Media Server works well. There is also icon of Seerviio - but if I try to open it, comes message:
loading....
and than error: Connection to server failed

What is wrong?
How to make it workable?

[patters]

Is the firewall configured in DSM perhaps? The WebUI runs on port 8123. Also you do need to leave Serviio to start for a minute or so before the WebUI works.

Hi,
thank you, unfortunatelly I do not know exactly, how you mean. Could you please send me screen copies via email or more detailed described. So far, there is nothing configured in DSM Firewall..
thanx