diff --git a/app/src/main/java/com/example/dcav2gui/TickerTracker.java b/app/src/main/java/com/example/dcav2gui/TickerTracker.java
index 013978a..0ea9082 100644
--- a/app/src/main/java/com/example/dcav2gui/TickerTracker.java
+++ b/app/src/main/java/com/example/dcav2gui/TickerTracker.java
@@ -6,6 +6,7 @@ import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
 
 import java.io.IOException;
+import java.util.Locale;
 
 import okhttp3.OkHttpClient;
 import okhttp3.Request;
@@ -26,12 +27,14 @@ public class TickerTracker {
     public static PriceChangeData getPriceChanges(String symbol) throws IOException {
         // Construct the API request URL for 24h change
         Request request24h = new Request.Builder()
-                .url(BINANCE_API_BASE_URL + "?symbol=" + symbol)
+                .url(BINANCE_API_BASE_URL + "?symbol=" + symbol.toUpperCase(Locale.ROOT))
                 .build();
 
         // Send 24h request
         try (Response response24h = httpClient.newCall(request24h).execute()) {
-            // Parse the JSON response
+            if (!response24h.isSuccessful()) {
+                throw new IOException("Unexpected code " + response24h);
+            }
             String responseBody24h = response24h.body().string();
             JsonObject jsonResponse = JsonParser.parseString(responseBody24h).getAsJsonObject();
 
@@ -47,11 +50,14 @@ public class TickerTracker {
 
             // Fetch historical data for 7d and 30d changes
             Request historicalRequest = new Request.Builder()
-                    .url("https://api.binance.com/api/v3/klines?symbol=" + symbol + "&interval=1d&limit=30")
+                    .url("https://api.binance.com/api/v3/klines?symbol=" + symbol.toUpperCase(Locale.ROOT) + "&interval=1d&limit=30")
                     .build();
 
             // Send historical data request
             try (Response historicalResponse = httpClient.newCall(historicalRequest).execute()) {
+                if (!historicalResponse.isSuccessful()) {
+                    throw new IOException("Unexpected code " + historicalResponse);
+                }
                 String historicalResponseBody = historicalResponse.body().string();
 
                 // Calculate 7d and 30d percentage changes
diff --git a/app/src/main/java/com/example/dcav2gui/ui/home/HomeFragment.java b/app/src/main/java/com/example/dcav2gui/ui/home/HomeFragment.java
index 51e76f4..bb48163 100644
--- a/app/src/main/java/com/example/dcav2gui/ui/home/HomeFragment.java
+++ b/app/src/main/java/com/example/dcav2gui/ui/home/HomeFragment.java
@@ -8,6 +8,7 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ImageView;
 import android.widget.TextView;
+import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.fragment.app.Fragment;
@@ -17,6 +18,8 @@ import com.example.dcav2gui.R;
 import com.example.dcav2gui.TickerTracker;
 import com.example.dcav2gui.databinding.FragmentHomeBinding;
 
+import java.io.IOException;
+
 public class HomeFragment extends Fragment {
 
     private HomeViewModel homeViewModel;
@@ -220,6 +223,7 @@ public class HomeFragment extends Fragment {
             String base_3 = "@string/base_price_ticker_3";
             String quote_3 = "@string/quote_price_ticker_3";
 
+
             TickerTracker.PriceChangeData priceData = TickerTracker.getPriceChanges( base_1 + quote_1);
             pricePair1.setText(String.format("%.2f", priceData.getCurrentPrice()));
             pricePair124hPercentage.setText(String.format("%.2f%%", priceData.getPriceChangePercent24h()));