diff --git a/fastchat/constants.py b/fastchat/constants.py
index 8ce44404d..eea4b59b3 100644
--- a/fastchat/constants.py
+++ b/fastchat/constants.py
@@ -15,10 +15,10 @@
 # </div>"""
 # SURVEY_LINK = ""
 
-COLOR = "#008B8B"
-SURVEY_LINK = f"""<div style='text-align: left; margin: 20px 0;'>
-    <div style='display: inline-block; border: 2px solid {COLOR}; padding: 20px; padding-bottom: 10px; padding-top: 10px; border-radius: 5px; background-color: #ECFAE5'>
-        <span style='color: {COLOR}; font-weight: bold;'>New Arena UI at <a href='https://beta.lmarena.ai/'>BETA.lmarena.ai</a>! Check it out & give feedback!</a></span>
+COLOR = "#F11414"
+SURVEY_LINK = f"""<div style='text-align: center; margin: 20px 0;'>
+    <div style='display: block; width: 100%; border: 2px solid {COLOR}; padding: 20px; padding-bottom: 10px; padding-top: 10px; border-radius: 5px; background-color: #FE9393'>
+        <span style='font-weight: bold; font-size: 20px; color: #050505; '>🔔 New Arena UI at <a href='https://lmarena.ai/leaderboard?utm_campaign=hf_banner' target="_blank" rel="noopener noreferrer" style="color: #233F9C; text-decoration: underline;">lmarena.ai/leaderboard</a>! Check it out and give feedback!</a></span>
     </div>
 </div>"""
 
diff --git a/fastchat/serve/monitor/monitor.py b/fastchat/serve/monitor/monitor.py
index 55851654e..462e38187 100644
--- a/fastchat/serve/monitor/monitor.py
+++ b/fastchat/serve/monitor/monitor.py
@@ -438,7 +438,7 @@ def build_arena_tab(
 
     arena_dfs = {}
     category_elo_results = {}
-    last_updated_time = elo_results["full"]["last_updated_datetime"].split(" ")[0]
+    last_updated_time = str(elo_results["full"]["last_updated_datetime"]).split(" ")[0]
 
     for k in key_to_category_name.keys():
         if k not in elo_results:
@@ -964,9 +964,9 @@ def build_leaderboard_tab(
                     </div>
                     """,
                 )
-                last_updated_time = elo_results_text["full"][
-                    "last_updated_datetime"
-                ].split(" ")[0]
+                last_updated_time = str(
+                    elo_results_text["full"]["last_updated_datetime"]
+                ).split(" ")[0]
                 gr.Markdown(
                     make_arena_leaderboard_md(
                         elo_results_text["full"]["leaderboard_table_df"],