iTunes Server activation on TS459ProII

[maconti]

Hi from Europe (Switzerland)
I've a problem to activate the iTunes Server on my TS459ProII ( firmware 3.5.2 Build 1126T) :
I flag the activation and set the Id and password BUT when I trie to conncet to the server web page for setting using the provided link the web page is not opened by Safary because is not find !
If I open my iTunes I can see the iTunes server between the shared devices BUT is not working!
Any suggestion?
Any tips or set up to be done?
Please let me have step by step procedure for a new...inexpert customer
Many Thanks
Marco