OneSignal - notification not opening my app

I can't open my app by clicking on a notification in OneSignal if the app is closed.

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import androidx.appcompat.app.AppCompatActivity;

import com.onesignal.OneSignal;

public class Loader extends AppCompatActivity {
    private static final String ONESIGNAL_APP_ID = "xxxx-xxxx-xxxx-xxxx";//my app id instead of "xxxx"

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Enable verbose OneSignal logging to debug issues if needed.
        OneSignal.setLogLevel(OneSignal.LOG_LEVEL.VERBOSE, OneSignal.LOG_LEVEL.NONE);

        // OneSignal Initialization
        OneSignal.initWithContext(this);
        OneSignal.setAppId(ONESIGNAL_APP_ID);
    }
}

manifest contains:

<meta-data
     android:name="com.onesignal.NotificationOpened.DEFAULT"
     android:value="DISABLE" 
/>

Gradle files like in onesignal sdk setup tutorial https://documentation.onesignal.com/docs/android-sdk-setup