Google Game Service error ratio of 100%: how to solve it?

[Pedro Henirque Braga Siqueira]

My Android application is linked to a Google Game Services project which was working until some days ago. 

However, now its error ratio is 100%. Failure of every request. 

It is not my application. Indeed, its errors ocurs even when I try to open the leaderboard on Play Games. 

I do not want to create another application, so I want to solve it. 

what can I do?

I have posted this issue to stackoverflow, but it did not solve the problem: https://stackoverflow.com/questions/50635742/google-game-service-error-ratio-of-100-how-to-solve-it

For example, I have a leaderboard in the Play Game, that does not open in the Play Games application (the application that comes within Android).

In the application I am develloping, it is the same, I try to open the leaderboard with the code:

    Games.getLeaderboardsClient(MyApplication.getAppContext(), GoogleSignIn.getLastSignedInAccount(this))

                    .getLeaderboardIntent(getString(R.string.leaderboard_id))

                    .addOnSuccessListener(new OnSuccessListener<Intent>() {

                        @Override

                        public void onSuccess(Intent intent) {

                            Log.d("LeaderBoard","onSuccess");

                            startActivityForResult(intent, RC_LEADERBOARD_UI);

                        }

    

                    }).addOnFailureListener(new OnFailureListener(){

    

                @Override

                public void onFailure(@NonNull Exception e) {

                    Log.d("LeaderBoard",e.toString());

                    Toast.makeText(thisActivity, "Failed to open the leaderboard.", Toast.LENGTH_SHORT).show();

                }

            });

It just open a blue screen for two seconds that just closes without showing any leaderboard.

I tryed to create a new leaderboard, which was successfuly created, but it started to happen the same with this one after I tryied to add a score to it:

    Games.getLeaderboardsClient(this, GoogleSignIn.getLastSignedInAccount(this))

            .submitScore(getString(R.string.leaderboard_id), score);

These codes were working before. It stopped working without any apparent reason.

<< Informations about the project >>

**gradle(Project)**

    

    // Top-level build file where you can add configuration options common to all sub-projects/modules.

    

    buildscript {

        repositories {

            jcenter()

            google()

        }

        dependencies {

            classpath 'com.android.tools.build:gradle:3.0.1'

            //classpath 'com.android.tools.build:gradle:2.2.0'

            // NOTE: Do not place your application dependencies here; they belong

            // in the individual module build.gradle files

            classpath 'com.google.gms:google-services:3.1.0'

        }

    }

    

    allprojects {

        repositories {

            jcenter()

            mavenCentral()

            maven {

                url "https://maven.google.com"

            }

            google()

        }

    }

    

    task clean(type: Delete) {

        delete rootProject.buildDir

    }

**gradle(Module)**

    apply plugin: 'com.android.application'

    android {

        compileSdkVersion 27

        buildToolsVersion '27.0.2'

        defaultConfig {

            applicationId "com.cerveja.qof.pedro.qof_cerveja"

            minSdkVersion 16

            targetSdkVersion 27

            versionCode 13

            versionName "2.0.3"

            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

        }

        buildTypes {

            release {

                minifyEnabled false

                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

            }

        }

    }

    dependencies {

        compile fileTree(include: ['*.jar'], dir: 'libs')

        androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {

            exclude group: 'com.android.support', module: 'support-annotations'

        }

    

        )

        //noinspection GradleCompatible

        compile 'com.android.support:appcompat-v7:27.0.2'

        //

        //

        //compile 'com.android.support:appcompat-v7:22.2.0'

        compile 'com.google.android.gms:play-services-ads:11.8.0'

        compile 'com.google.android.gms:play-services-auth:11.8.0'

        compile 'com.google.android.gms:play-services-games:11.8.0'

        compile 'com.android.support:support-v4:27.0.2'

        compile 'com.android.support.constraint:constraint-layout:1.0.2'

        compile 'com.facebook.android:facebook-login:[4,5)'

        compile 'com.facebook.android:facebook-share:[4,5)'

        //compile 'com.google.firebase:firebase-core:11.6.2'

        //compile 'com.google.firebase:firebase-auth:11.6.2'

        compile 'com.google.firebase:firebase-core:11.8.0'

        compile 'com.google.firebase:firebase-auth:11.8.0'

        compile 'net.zetetic:android-database-sqlcipher:3.5.9@aar'

        testCompile 'junit:junit:4.12'

        implementation 'com.google.ads.mediation:applovin:7.6.1.0'

        implementation 'com.google.ads.mediation:inmobi:6.2.4.0'

        implementation 'com.squareup.picasso:picasso:2.5.2'

        implementation 'com.android.support:recyclerview-v7:27.0.2'

        //implementation 'com.applovin:applovin-sdk:7.6.1'

        implementation fileTree(include: ['*.jar'], dir: 'libs')

        //implementation 'com.google.ads.mediation:chartboost:7.0.1.0'

        //implementation files('libs/chartboost.jar')

        implementation files('libs/applovin-sdk-7.6.2.jar')

    }

    apply plugin: 'com.google.gms.google-services'

[Pedro Henirque Braga Siqueira]

PS: I  noticed that it loads the leaderboard (empty even if there is stored scores in it) if the particular user did not submit any score. 
After the particular user submit a score, the above error start to happen.