SUP Tutorial: iOS Application Development login fail

Hi Everyone:

I practice sybase tutorial :iOS Application Development in the link:http://infocenter.sybase.com/help/index.jsp?topic=/com.sybase.infocenter.dc01213.0200/doc/html/vhu1266603191501.html

When I run the iOS application in simulator, I find a log "Login Failed" is printed by SUP101CallBackHanlder. I've checked SUP connection and reregist the mobile however the error is still there. When I click the subscribe button, no data retrieves.

Does anyone practice that tutorial? I think this maybe the connection configuration issues. Please give me some suggestion how to fix the issue. Thanks

Regard

Elliot