Merhaba, onesignal sdk 26 ve üzerinde çalışmıyor arkadaşlar ne yaptıysam çözemedim 11 saattir uğraşıyorum, bildirim gelmiyor, kullanıcılar panelde sayılmıyor vs. Ne yapmam gerekiyor?

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    buildToolsVersion '25.0.0'
    defaultConfig {
        applicationId "com.xxx.xxx"
        minSdkVersion 15
        targetSdkVersion 26
        versionCode 3
        versionName '1.3'

        manifestPlaceholders = [onesignal_app_id: "xxx-9b30-44d9-a8a4-2f0c450c3453"  ,
                                // Project number pulled from dashboard, local value is ignored.
                                onesignal_google_project_number: "REMOTE"]
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    productFlavors {
    }
}

dependencies {
    compile fileTree(include: ['*.jazr'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:24.2.1'
    compile 'com.android.support:appcompat-v7:24.2.1'
    compile 'com.onesignal:OneSignal:3.+@aar'
    compile 'com.google.android.gms:play-services-base:8.4.0'
    compile 'com.google.android.gms:play-services-analytics:8.4.0'
    compile 'com.google.android.gms:play-services-ads:8.4.0'
    compile 'com.google.android.gms:play-services-gcm:8.4.0'
    compile 'com.google.android.gms:play-services-location:8.4.0'
    compile 'com.android.support:support-v4:24.2.1'
}