I need to give the certification ASAP, how should i schedule the exam again?

Its still showing in progress status at webassessor.

When I run runWarehouseEquipmentSync() in Execute Anonymous, the Future Handler and the code logs run successfully.  The Equipment records in my org also show correctly that they have just been modified, and I'm running tests against the correct org.

I'm still getting "Challenge Not yet complete... here's what's wrong:
The WarehouseCalloutService class does not appear to have run successfully. Make sure that you run this class at least once before attempting this challenge. Since this class is implementing the queueable interface, you may want to wait to ensure that it has processed successfully."  

Can someone tell me if there is a bug with this or what is going on?

public with sharing class WarehouseCalloutService {

    private static final String WAREHOUSE_URL = 'https://th-superbadge-apex.herokuapp.com/equipment';

    @future(callout=true)
    public static void runWarehouseEquipmentSync() {        
       HttpResponse res = WarehouseCalloutService.sendRequest('GET');
       if (res.getStatusCode() == 200) {
          List<Product2> newEquipment = getEquipmentList(res);
          if (newEquipment.size() > 0) {                
            upsert newEquipment Warehouse_SKU__c;
          }
       }
    }
    
    public static List<Product2> getEquipmentList(HttpResponse res) {
       List<Object> externalEquipment = (List<Object>) JSON.deserializeUntyped(res.getBody());
	   List<Product2> newEquipment = new List<Product2>();
        
       for (Object externalEquip : externalEquipment) {
          Map<String, Object> equipMap = (Map<String, Object>)externalEquip;
                        
          Product2 newEquip = new Product2();
          newEquip.Warehouse_SKU__c = (String) equipMap.get('sku'); //START DEBUGGING EACH FIELD AND SEE WHAT IS RETURNED
          newEquip.Replacement_Part__c = (Boolean) equipMap.get('replacement');
          newEquip.Cost__c = (Integer) equipmap.get('cost');
          newEquip.Current_Inventory__c = (Integer) equipmap.get('quantity');
          newEquip.Lifespan_Months__c = (Integer) equipmap.get('lifespan');
          newEquip.Maintenance_Cycle__c = (Integer) equipmap.get('maintenanceperiod');
          newEquip.ProductCode = (String) equipMap.get('_id ');
          newEquip.Name = (String) equipMap.get('name');
          
          newEquipment.add(newEquip);
       }
        
        return newEquipment;
    }
    
    private static HttpResponse sendRequest(String httpVerb) {
        HttpRequest request = new HttpRequest();
        request.setMethod(httpVerb);
        request.setEndpoint(WAREHOUSE_URL);
        
        Http http = new Http();
        HttpResponse response = http.send(request);
        
        return response;
    }
}