Admobfree isn't working

Ionic Native
1

Hello, sometime ago I made a short test with admobfree plugin. It worked : Now I would do it again and the same code isn’t working.

So I set up a new project and it wasn’ t working too.
The code depends on https://www.joshmorony.com/integrating-google-admob-advertisements-in-ionic/

app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { ErrorHandler, NgModule } from '@angular/core';
import { IonicApp, IonicErrorHandler, IonicModule } from 'ionic-angular';
import { SplashScreen } from '@ionic-native/splash-screen';
import { StatusBar } from '@ionic-native/status-bar';
import { AdMobFree } from '@ionic-native/admob-free';

import { MyApp } from './app.component';
import { HomePage } from '../pages/home/home';

@NgModule({
  declarations: [
    MyApp,
    HomePage
  ],
  imports: [
    BrowserModule,
    IonicModule.forRoot(MyApp)
  ],
  bootstrap: [IonicApp],
  entryComponents: [
    MyApp,
    HomePage
  ],
  providers: [
    StatusBar,
    SplashScreen,
    AdMobFree,
    {provide: ErrorHandler, useClass: IonicErrorHandler}
  ]
})
export class AppModule {}

home.html

<ion-header>
  <ion-navbar>
    <ion-title>
      Ionic Blank
    </ion-title>
  </ion-navbar>
</ion-header>

<ion-content padding>
  The world is your oyster.
  <p>
    If you get lost, the <a href="http://ionicframework.com/docs/v2">docs</a> will be your guide.

    <button ion-button (click)="showBanner()">Show Banner</button>
    <button ion-button (click)="launchInterstitial()">Show Interstitial</button>
  </p>
  <p>result Banner: {{bannertext}} </p>
</ion-content>

home.ts

import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';
import { AdMobFree, AdMobFreeBannerConfig, AdMobFreeInterstitialConfig } from '@ionic-native/admob-free';

@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})
export class HomePage {

  constructor(public navCtrl: NavController, public admob: AdMobFree) {

  }

bannertext:string = '';

  showBanner() {

           let bannerConfig: AdMobFreeBannerConfig = {
               isTesting: true, // Remove in production
               autoShow: true
               //id: Your Ad Unit ID goes here
           };

           this.admob.banner.config(bannerConfig);

           this.admob.banner.prepare().then(() => {
               this.bannertext =  'bannertext success';
           }).catch(e => this.bannertext =  'bannertext e:' + e);

       }

       launchInterstitial() {

               let interstitialConfig: AdMobFreeInterstitialConfig = {
                   isTesting: true, // Remove in production
                   autoShow: true
                   //id: Your Ad Unit ID goes here
               };

               this.admob.interstitial.config(interstitialConfig);

               this.admob.interstitial.prepare().then(() => {
                this.bannertext =  'interstitial success';
              }).catch(e => this.bannertext =  'interstitial e:' + e);

           }
}

No Errors in visual code ide, no errors on ionic cordva build android. this.bannertext shows sucess, but I have no banner ad or interstital ad.
So what is wrong with this code?

Best regards, anna-liebt

Additional

ionic info

cli packages: (C:\Users\admin\AppData\Roaming\npm\node_modules)

@ionic/cli-utils  : 1.14.0
ionic (Ionic CLI) : 3.14.0

global packages:

cordova (Cordova CLI) : 7.0.1

local packages:

@ionic/app-scripts : 3.0.1
Cordova Platforms  : android 6.2.3
Ionic Framework    : ionic-angular 3.7.1

System:

Node : v6.11.0
npm  : 3.10.10
OS   : Windows 10

Misc:

backend : legacy
2

I haven’t checked your code, but the plugin is sketchy. So is the other admob plugin. That’s why Ionic actively recruiting a professional Cordova plugin programmer is a big deal. At any rate, I don’t have time to review your code at the moment, but I wanted to post this, so you knew that you might have to check more than your code. Take a look at the admobfree Github issues also. Maybe the problem is there.