Connecting to https://api.parse.com has deprecated 1.5.1 Android Parse SDK

In my app 1.5.1 Android Parse SDK.

Many of my clients connect to Parse.com without issue. I have some clients who are getting an error like this:

i/o failure: org.apache.http.conn.HttpHostConnectException: Connection to https://api.parse.com refused

com.parse.ParseException: i/o failure: org.apache.http.conn.HttpHostConnectException: Connection to https://api.parse.com refused
    at com.parse.ParseRequest.connectionFailed(SourceFile:387)
    at com.parse.ParseRequest$3.call(SourceFile:271)
    at com.parse.Task$3.run(SourceFile:199)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
    at java.lang.Thread.run(Thread.java:841)

      

        
        
        
      

    

I am running the code on a thread and have a timer that will stop the timer and put a message that cannot be connected. It does not run until this timer expires.

Here's the code that doesn't work:

new Thread(new Runnable() {
    public void run() {
       try {
           Parse.initialize(mContext, mAppId, mAppKey);
           ParseQuery<ParseObject> query1 = ParseQuery.getQuery("myTable");
           query1.setCachePolicy(ParseQuery.CachePolicy.NETWORK_ONLY);
           ParseObject metaData = query1.getFirst();
           // do other work...
       }
       catch (Exception e) {
           Log.e(TAG, e);
       }
   }
});

      

        
        
        
      

    

Clients show screenshots of active data connections (both cellular and wireless).

Any ideas on why some clients fail and most work?