diff --git a/TopsortAnalytics/src/main/java/com/topsort/analytics/banners/run.kt b/TopsortAnalytics/src/main/java/com/topsort/analytics/banners/run.kt
index 0421f22..c40135f 100644
--- a/TopsortAnalytics/src/main/java/com/topsort/analytics/banners/run.kt
+++ b/TopsortAnalytics/src/main/java/com/topsort/analytics/banners/run.kt
@@ -21,12 +21,13 @@ suspend fun runBannerAuction(config: BannerConfig): BannerResponse? {
     val auctionJob = CoroutineScope(Dispatchers.IO).launch {
         response = TopsortAuctionsHttpService.runAuctions(request)
     }
+    auctionJob.join()
     if ((response?.results?.isNotEmpty() == true)) {
         if (response!!.results[0].winners.isNotEmpty()) {
             val winner = response!!.results[0].winners[0]
             return BannerResponse(
                 id = winner.id,
-                url = winner.asset!!.url,
+                url = winner.asset!![0].url,
                 type = winner.type,
                 resolvedBidId = winner.resolvedBidId
             )
diff --git a/TopsortAnalytics/src/main/java/com/topsort/analytics/model/auctions/Auction.kt b/TopsortAnalytics/src/main/java/com/topsort/analytics/model/auctions/Auction.kt
index b131806..7154286 100644
--- a/TopsortAnalytics/src/main/java/com/topsort/analytics/model/auctions/Auction.kt
+++ b/TopsortAnalytics/src/main/java/com/topsort/analytics/model/auctions/Auction.kt
@@ -23,7 +23,7 @@ data class Auction private constructor(
                 put("products", JSONObject.wrap(products))
             }
             if (category != null) {
-                put("category", JSONObject.wrap(category))
+                put("category", category.toJsonObject())
             }
             if (searchQuery != null) {
                 put("searchQuery", searchQuery)
@@ -214,7 +214,23 @@ data class Auction private constructor(
         val id: String? = null,
         val ids: List<String>? = null,
         val disjunctions: List<List<String>>? = null,
-    )
+    ) {
+        fun toJsonObject(): JSONObject {
+            val builder = JSONObject()
+            with(builder) {
+                if (id != null) {
+                    put("id", id)
+                }
+                if (ids != null) {
+                    put("ids", JSONObject.wrap(ids))
+                }
+                if (disjunctions != null) {
+                    put("disjunctions", JSONObject.wrap(disjunctions))
+                }
+            }
+            return builder
+        }
+    }
 
     data class GeoTargeting(
         val location: String,
diff --git a/TopsortAnalytics/src/main/java/com/topsort/analytics/model/auctions/AuctionResponse.kt b/TopsortAnalytics/src/main/java/com/topsort/analytics/model/auctions/AuctionResponse.kt
index cdc3c9e..0097a05 100644
--- a/TopsortAnalytics/src/main/java/com/topsort/analytics/model/auctions/AuctionResponse.kt
+++ b/TopsortAnalytics/src/main/java/com/topsort/analytics/model/auctions/AuctionResponse.kt
@@ -44,26 +44,33 @@ data class AuctionResponse private constructor(
         val type: EntityType,
         val id: String,
         val resolvedBidId: String,
-        val asset: Asset? = null,
+        val asset: List<Asset>? = null,
     ) {
         companion object {
             fun fromJsonObject(json: JSONObject): AuctionWinnerItem {
+                val assetArray = json.optJSONArray("asset")
+                var assets: List<Asset>? = null
+                if (assetArray != null) {
+                    assets = (0 until assetArray.length()).map {
+                        Asset.fromJsonObject(assetArray.getJSONObject(it))
+                    }
+                }
                 return AuctionWinnerItem(
                     rank = json.getInt("rank"),
                     type = EntityType.fromValue(json.getString("type")),
                     id = json.getString("id"),
                     resolvedBidId = json.getString("resolvedBidId"),
-                    asset = Asset.fromJsonObject(json),
+                    asset = assets,
                 )
             }
         }
     }
 
+
     data class Asset(val url: String) {
         companion object {
-            fun fromJsonObject(json: JSONObject): Asset? {
-                val asset = json.optJSONObject("asset") ?: return null
-                val url = asset.getString("url")
+            fun fromJsonObject(json: JSONObject): Asset {
+                val url = json.getString("url")
                 return Asset(url = url)
             }
         }
diff --git a/TopsortAnalytics/src/main/java/com/topsort/analytics/service/TopsortAuctionsHttpService.kt b/TopsortAnalytics/src/main/java/com/topsort/analytics/service/TopsortAuctionsHttpService.kt
index ea81b45..ce98f7a 100644
--- a/TopsortAnalytics/src/main/java/com/topsort/analytics/service/TopsortAuctionsHttpService.kt
+++ b/TopsortAnalytics/src/main/java/com/topsort/analytics/service/TopsortAuctionsHttpService.kt
@@ -1,5 +1,6 @@
 package com.topsort.analytics.service
 
+import android.util.Log
 import com.topsort.analytics.Cache
 import com.topsort.analytics.core.HttpClient
 import com.topsort.analytics.core.HttpResponse
@@ -17,12 +18,15 @@ internal object TopsortAuctionsHttpService {
         val response = executeRunAuctions(auctionRequest)
         if (response.isSuccessful()) {
             return AuctionResponse.fromJson(response.body)
+        } else {
+            Log.w("TopsortAuctionsHttpService", "Auction message: " + response.message)
+            Log.w("TopsortAuctionsHttpService", "Auction response: " + response.body.toString())
         }
         return null
     }
 
     private fun executeRunAuctions(auctionRequest: AuctionRequest): HttpResponse {
-        if(!this::httpClient.isInitialized){
+        if (!this::httpClient.isInitialized) {
             httpClient = HttpClient("${baseApiUrl}${AUCTION_ENDPOINT}")
         }
         val json = auctionRequest.toJsonObject().toString()
diff --git a/app/src/main/java/com/topsort/example/SampleActivity.kt b/app/src/main/java/com/topsort/example/SampleActivity.kt
index 7b612fd..4385a42 100644
--- a/app/src/main/java/com/topsort/example/SampleActivity.kt
+++ b/app/src/main/java/com/topsort/example/SampleActivity.kt
@@ -21,7 +21,8 @@ class SampleActivity : AppCompatActivity() {
 
         this.lifecycleScope.launch {
             val bannerView = findViewById<BannerView>(R.id.bannerView)
-            val bannerConfig = BannerConfig.LandingPage(slotId = "sample", ids = listOf("p1", "p2"))
+            val bannerConfig =
+                BannerConfig.CategorySingle(slotId = "slot", category = "category")
             bannerView.setup(
                 bannerConfig,
                 "sample_activity",
diff --git a/app/src/main/java/com/topsort/example/TestApplication.kt b/app/src/main/java/com/topsort/example/TestApplication.kt
index 33beaf0..995cc31 100644
--- a/app/src/main/java/com/topsort/example/TestApplication.kt
+++ b/app/src/main/java/com/topsort/example/TestApplication.kt
@@ -16,10 +16,6 @@ class TestApplication : Application() {
             opaqueUserId = sessionId,
             token = BuildConfig.TOKEN
         )
-
-        val config = BannerConfig.LandingPage(slotId = "app", ids = listOf("p1", "p2"))
-        //  val banner = BannerView(context = , config = config)
-
-
+        
     }
 }