getIds() big delay

Ionic Framework
1

Hi!
I need to get the player id. For this, I used the method getIds() - Ionic 4 Angular, but it takes 30 seconds to 3 minutes to return the data.
It takes the same amount of time to register the device in the OneSignal dashboard.

Ionic:

ionic (Ionic CLI) : 4.12.0 (/Users/matheus/npm-global/lib/node_modules/ionic)
Ionic Framework : @ionic/angular 4.0.0
@angular-devkit/build-angular : 0.12.4
@angular-devkit/schematics : 7.2.4
@angular/cli : 7.2.4
@ionic/angular-toolkit : 1.3.0

Cordova:

cordova (Cordova CLI) : 9.0.0
Cordova Platforms : android 8.0.0, browser 6.0.0, ios 5.0.1

System:

Android SDK Tools : 26.1.1
NodeJS : v11.9.0
npm : 6.8.0
OS : macOS Mojave
Xcode : Xcode 10.2.1 Build version 10E1001

Steps to Reproduce:

1. Create Ionic 4 Angular project;
2. Install the OneSignal via npm and the OneSignal Cordova plugin;
3. Perform the initial configuration of OneSignal with the id and sender id (firebase);
4. Add the OneSignal to the constructor (angular) and call the function to get ids (this.oneSignal.getIds().then((ids) =>{});

Thank you!