IndoorSDK not working on Swift

I’ve built an app following exactly the swift tutorial but, when I try the app, it does not work.
The functions indoorLocationManager are never called even on error neither on success.
Any suggest?

import Foundation
import WebKit
import UIKit

class LocationBeacon: NSCoder, EILIndoorLocationManagerDelegate, WKNavigationDelegate{
    
    var appID: String
    var appToken: String
    var locationID: String
    let locationManager = EILIndoorLocationManager()
    var location: EILLocation
    let url = Bundle.main.url(forResource: "index", withExtension: "html")!
    var webView: WKWebView!
    
    init(appID: String, appToken: String, locationID:String){
        self.appID=appID
        self.appToken=appToken
        self.locationID=locationID
        self.location = EILLocation()
        super.init()
        self.locationManager.delegate = self
        
        webView = WKWebView()
        webView.navigationDelegate = self
        webView.loadFileURL(url, allowingReadAccessTo: url)
        webView.load(URLRequest(url: url))
        
        ESTConfig.setupAppID(appID, andAppToken: appToken)
        
        let fetchLocationRequest = EILRequestFetchLocation(locationIdentifier: locationID)
        fetchLocationRequest.sendRequest{ (location, error) in
            if location != nil {
                self.location = location!
                self.startPositioning()
            } else {
                print("errore!")
                //TODO impossibile trovare la location
            }
        }
    }

    func startPositioning(){
        self.locationManager.start()
        self.locationManager.startMonitoring(for: self.location)
        self.locationManager.startPositionUpdates(for: self.location)
    }

    func indoorLocationManager(manager: EILIndoorLocationManager!, didFailToUpdatePositionWithError: NSError!){
        print("failed")
        //TODO errore nell'aggiornamento della posizione
    }
    
    func indoorLocationManager(manager: EILIndoorLocationManager!, didUpdatePostition position: EILOrientedPoint!, withAccuracy positionAccuracy: EILPositionAccuracy, inLocation location: EILLocation!) {
        print("cambia")
        let first = position.description()
        webView.loadHTMLString(first , baseURL: url)
    }
    
    func getView() -> UIView{
        return webView
    }
}