Download file trought tag <a> opens app instead of downloading due to deeplinks - download

Question

I have an app with deeplinks, where I have declared what is necessary in the manifest and the links are linked to the app. Deeplinks work fine.
The problem comes when I try to download a file, instead of downloading the file it interprets it is a deeplink keeping the view of the app.
For downloading the file I use:
<a href="https://www.myweb.com/Download.php?filename=file.pdf" target="_blank">
Or
function downloadURI(uri, name)
{
var link = document.createElement("a");
link.setAttribute('download', name);
link.href = uri;
document.body.appendChild(link);
link.click();
link.remove();
}
or
function downloadfile(){
$.ajax({
url: 'www.myweb.com/files/filename.pdf',
method: 'GET',
xhrFields: {
responseType: 'blob'
},
success: function (data) {
var a = document.createElement('a');
var url = window.URL.createObjectURL(data);
a.href = url;
a.download = 'myfile.pdf';
document.body.append(a);
a.click();
a.remove();
window.URL.revokeObjectURL(url);
}
});
}
I try also an Iframe solution:
function shwAtt(strPath) {
var varExt = strPath.split('.');
//alert(varExt.length);
if (varExt[varExt.length - 1] == "txt") {
window.open(strPath);
}
else {
var iframe;
iframe = document.getElementById("hiddenDownloader");
if (iframe == null) {
iframe = document.createElement('iframe');
iframe.id = "hiddenDownloader";
iframe.style.visibility = 'hidden';
document.body.appendChild(iframe);
}
iframe.src = strPath;
}
return false;
}