Hi Shaobo,
There are three parts of the problem let me get them clear.
1) you have tested it with the App Store version of the app and you can open the report. Right?
2) you have downloaded the SDK App from Service Market Place and Custom built the App. Does not work? Right?
3) you have tried and embed the Webi View into your custom IOS App and this does not work too? Right?
Please clarify so that i understand the problem right.
Regards
Vikas