Android Firebase App Indexing Personal Content not working on tablet

I have implemented Android Firebase Apping Personaling app in my app. I index articles for easy search from Google Search Assistant. It works fine with phones [tested on Samsung S7 Edge and S8] but doesn't display results in any tables [Nexus 7 (5.0.1), Samsung Tab S2 (7.0)].

Also entries are listed in Settings -> Google Settings -> Indexing FireBase Apps under the app. correct in both phones and tablets.

url: "android-app//custom-package/....."
type: "DigitalDocument"
nane: ["FC Barcelona..."]
metadata:{
   worksoffline:false
   score:0
}

      

        
        
        
      

    

Screenshots: -

Search Works with phones:

Search result doesn't work in Tablet:

Below is the code where I store articles as personal content in the System.

 ArrayList<Indexable> indexableArticles = new ArrayList<>();

    for (IndexEntry e : indexFeed) {
        Indexable articleToIndex = Indexables.digitalDocumentBuilder()
                .setName(e.getTitle())
                .setUrl(e.getUrl())
                .build();

        indexableArticles.add(articleToIndex);
    }

    if (indexableArticles.size() > 0) {
        Indexable[] indexedArr = new Indexable[indexableArticles.size()];
        indexedArr = indexableArticles.toArray(indexedArr);

        // batch insert indexable articles into index
        FirebaseAppIndex.getInstance().update(indexedArr);
    }

      

        
        
        
      

    

Also I am using com.google.firebase library: firebase-appindexing: 10.2.6

Can't figure out what the problem is in Tablet even after it indexes articles. Glad to help, you will help. Thank.