Windows store app not loading after sign in page

I'm trying to make a windows store app ( for windows tablets ) and I found out that due to some security issues, I cannot use javascript DOM directly. One work around is using MSApp.execUnsafeLocalFunction(function () { });

Now, My app loads and I can see the login screen.

When I enter my login credentials and press sign in button, It says incorrect details and I get the following error in Visual studio,

Can't load <https:// .... >. An app can't load remove web content in local context.

I tried using ApplicationContentUriRules to add the website it is accessing, but no use.

Is anybody else facing similar problem?

Can somebody please help me resolve this? Thanks