Ionic - Some functionnalities are not working while compiling on IOS - ios

Question

Context:
Hello, I am working on a Ionic application (made in Typescript). In this application, I control a wifi camera via HTTP Request to the IP (http://192.72.1.1/myCommand to be precise).
Main actions I do with the camera:
Start recording
Stop recording
Get videos list
Download a video
When I use the Ionic DevApp:
With the Ionic DevApp, everything works perfectly, I can do all mains actions without a problem.
When I compile the application on IOS:
I compile with the command ionic cordova build ios --prod, then I archive with Xcode and send it to the AppStore to test it with Test Flight.
I got no errors while compiling / archive the application. But when I try it on my iPhone, I can start / stop recording, but can't download the video.
Problem:
Some commands are not working, but I don't know if it is getting the list or downloading the video, I have no logs. I don't understand why some commands are working but others no.
IOS is blocking download requests? How to solve my problem?
Notes:
I already tried all basic things like delete the IOS platform, recompile, uninstall, ...
I tried different Ionic HTTP plugins, same problem with all of them.
Some code:
Start / Stop the camera: (it is the same command to start / stop).
startCamera(){
var url = "http://192.72.1.1/changeRecordStatus";
var result = this.http.get(url);
result.subscribe(data => {
console.log("Works");
},
err => {
console.log("Error" + err);
}
);
}
Getting the name of the last video:
getLastVideo(){
var url = "http://192.72.1.1/listVideos";
this.http.get(url, {}, {})
.then(data => {
var xml = data.data
var xmlDOM = new DOMParser().parseFromString(xml, 'text/xml');
var temp = this.xmlToJson(xmlDOM); // function that convert XML to JSON
var resultArray = Object.keys(temp).map(function(i){
let ite = temp[i];
return ite;
});
resultArray = resultArray[0]['file'].reverse();
this.lastVideo = resultArray[0]['name']; // lastVideo is a global variable
},
(error) =>{
console.log("Error while getting the name of the last video" + error);
});
}
Downloading the file from the camera:
downloadFileFromCamera() {
this.getLastVideo();
var basename_file = this.lastVideo;
var url = "http://192.72.1.1" + basename_file;
this.fileTransfer.download(encodeURI(url), this.file.dataDirectory + '/videos/' + basename_file, true).then((entry) => {
this.video[this.counterVideos] = entry; // video is a global array
this.counterVideos +=1;
}, (error) => {
console.log("Error while downloading the last video" + error);
});
}
If someone knows how to solve my problem, I would be so grateful! Thanks in advance.