Zip operator in RxJava is not working with Retrofit

I am trying to use zip operator in RxJava in android, where I am trying to execute 3 parallel API Calls to get their result together. But my zip operator is not producing result. The code for my sample problem is as follows:

Code for my gradle file

compile 'com.squareup.retrofit2:retrofit:2.0.2'
compile 'com.squareup.retrofit2:converter-gson:2.0.2'
compile 'com.squareup.retrofit2:adapter-rxjava:2.0.2'

I have also included this in my gradle file

exclude 'META-INF/rxjava.properties'

Code for my Retrofit Client

retrofit = new Retrofit.Builder().baseUrl(BASE_URL)
    .addCallAdapterFactory(RxJavaCallAdapterFactory.create())
    .addConverterFactory(GsonConverterFactory.create())
    .client(client).build();

Code for my API Interface

public interface ApiInterface {
    @GET("/users/{UUID}/count.json")
    Observable<Count> getCountInfo(@Path("UUID") String UUID, @Query("store_id") String sort);
    @GET("v1/users/{UUID}.json")
    Observable<GetStatus> getState(@Path("UUID") String UUID);
    @GET("v1/user/{UUID}/points.json")
    Observable<Response> getResponse(@Path("UUID") String UUID);
}

Code for my Observables is

Retrofit repo = APIClient.getClient(baseUrl);
Observable<Count> userObservable = repo.create(ApiInterface.class)
    .getCount(userid,"1")
    .subscribeOn(Schedulers.newThread())
    .observeOn(Schedulers.io());
Observable<GetStatus> eventObservable = APIClient.getClient(baseUrl)
    .create(ApiInterface.class)
    .getState(userid)
    .subscribeOn(Schedulers.newThread())
    .observeOn(Schedulers.io());
Observable<Response> eventsObservable1 = APIClient
    .getClient(baseUrl)
    .create(ApiInterface.class)
    .getPoints(userid)
    .subscribeOn(Schedulers.newThread())
    .observeOn(Schedulers.io());

Code for my combined observable and zip operator is:

Observable<CommonSplashResponse> combined = Observable.zip(userObservable, eventsObservable, eventsObservable1,
new Func3<Count, GetStatus, Response, CommonResponse>() {
    @Override
    public CommonResponse call(Count count, GetStatus uStatus, 
        Response lResponse) {
        return new CommonResponse(count, uStatus, lResponse);
    }
});
combined.subscribe(new Subscriber<CommonSplashResponse>() {
    @Override
    public void onCompleted() {
    }
    @Override
    public void onError(Throwable e) {
    }
    @Override
    public void onNext(CommonResponse o) {
        LOG.info("Count Value is " + o.getCount());
        /**
        ***
        */
    }
});

The problem I am facing is that, the statements inside the onNext of the Combined Observable are not being executed. What could be the reason for glitch in execution? So I wanted to ask:

1. Is there any issue in my dependencies?
2. Should AndroidSchedulers.mainThread() be used instead of Schedulers.io()