remote xml readed on simulator but doesn't work on iPhone

Hi,

i am at the end of a project and i have a very disturbing bug. i am reading a remote xml at this adress : https://seetch.com/api/user/tags

i am getting photos tags for a user with using wsse for security

here is my code (businessLogic) :

exports.getTagsForUser = function(success, error){
    var wsse = require('BusinessLogic/getWSSE').getWSSE();
    var wsseValue = 'UsernameToken Username="' + wsse.username + '", PasswordDigest="' + wsse.passwordDigest + '", Nonce="' + wsse.nonce + '", Created="' + wsse.created + '"';
 
    var client = Ti.Network.createHTTPClient();
    client.open('GET', 'https://seetch.com/api/user/tags', false);
    client.setRequestHeader('Authorization', 'WSSE profile="UsernameToken"');
    client.setRequestHeader('x-wsse', wsseValue);
 
    var id, tag;
    var tags = [];
 
    client.onerror = function(e){
        error(e.error);
    };
 
    client.onload = function(e) {
        try{
            var doc = this.responseXML;
            var elements = doc.getElementsByTagName('tag');
            for(var i=0; i<elements.length; i++){
                id = elements.item(i).getAttribute('id');
                tag = elements.item(i).getElementsByTagName('name').item(0).text;
 
                tags.push({id: id, tag: tag});
            }
 
            success(tags);
        }   
 
       catch(Err){
            error(Err);
       }
    };
 
    client.send();
};

First : strangely i have a lot of timeouts and when i connect to the website within a browser, it is quick and second, this code doesn't display tags on the iPhone and the activity indicator stays on the screen (not hided):

here is the code for the ui :

winSearch.addEventListener('open', function(e){
        loadTags();
    });
 
    function loadTags(resetPullHeader)
    {
        indicateur.show();
        rows = [];
        require('businessLogic/getTagsForUser').getTagsForUser(
            function update(tags){
                for(var i=0; i<tags.length; i++)
                {
                    var row = Ti.UI.createTableViewRow({
                        height: 30,
                        backgroundImage : 'images/searchUnselected.png',
                        selectedBackgroundImage : 'images/searchSelected.png',
                        tag: tags[i].tag
                    });
 
                    var tag = Ti.UI.createLabel({
                        text: tags[i].tag,
                        color: 'white',
                        left: 10
                    });
 
                    row.add(tag);
 
                    rows.push(row);
                }
 
                searchTableView.setData(rows);
                indicateur.hide();
                }
            },
 
            function error(msg){
                indicateur.hide();
                alert(msg);
            }
        );
    }

on Iphone the activity indicator is never hided and it is very strange....

thanks for help...