diff --git a/public/js/app.js b/public/js/app.js
index e3535e7..6dca5af 100644
--- a/public/js/app.js
+++ b/public/js/app.js
@@ -328,7 +328,6 @@
           </td>
           <td>
             <div style="color: var(--text-primary); font-weight: 600; font-family: var(--font-sans);">${escapeHtml(server.job)}</div>
-            <div style="font-size: 0.65rem; color: var(--text-muted); opacity: 0.8;">${escapeHtml(server.instance)}</div>
           </td>
           <td>${escapeHtml(server.source)}</td>
           <td>
diff --git a/server/prometheus-service.js b/server/prometheus-service.js
index 8557e44..90547dc 100644
--- a/server/prometheus-service.js
+++ b/server/prometheus-service.js
@@ -42,18 +42,18 @@ async function testConnection(url) {
     // Using native fetch to avoid follow-redirects/axios "protocol mismatch" issues in some Node environments
     const controller = new AbortController();
     const timer = setTimeout(() => controller.abort(), QUERY_TIMEOUT);
-    
+
     // Node native fetch - handles http/https automatically
     const res = await fetch(`${normalized}/api/v1/status/buildinfo`, {
       signal: controller.signal
     });
-    
+
     clearTimeout(timer);
 
     if (!res.ok) {
       throw new Error(`Prometheus returned HTTP ${res.status}`);
     }
-    
+
     const data = await res.json();
     return data?.data?.version || 'unknown';
   } catch (err) {
@@ -74,17 +74,17 @@ async function query(baseUrl, expr) {
     const params = new URLSearchParams({ query: expr });
     const controller = new AbortController();
     const timer = setTimeout(() => controller.abort(), QUERY_TIMEOUT);
-    
+
     const res = await fetch(`${url}/api/v1/query?${params.toString()}`, {
       signal: controller.signal
     });
-    
+
     clearTimeout(timer);
 
     if (!res.ok) {
       throw new Error(`Prometheus returned HTTP ${res.status}`);
     }
-    
+
     const data = await res.json();
     if (data.status !== 'success') {
       throw new Error(`Prometheus query failed: ${data.error || 'unknown error'}`);
@@ -107,17 +107,17 @@ async function queryRange(baseUrl, expr, start, end, step) {
     const params = new URLSearchParams({ query: expr, start, end, step });
     const controller = new AbortController();
     const timer = setTimeout(() => controller.abort(), QUERY_TIMEOUT);
-    
+
     const res = await fetch(`${url}/api/v1/query_range?${params.toString()}`, {
       signal: controller.signal
     });
-    
+
     clearTimeout(timer);
 
     if (!res.ok) {
       throw new Error(`Prometheus returned HTTP ${res.status}`);
     }
-    
+
     const data = await res.json();
     if (data.status !== 'success') {
       throw new Error(`Prometheus range query failed: ${data.error || 'unknown error'}`);
@@ -180,6 +180,7 @@ async function getOverviewMetrics(url, sourceName) {
 
   const getOrCreate = (metric) => {
     const key = metric.instance;
+
     if (!instances.has(key)) {
       instances.set(key, {
         instance: key,