diff --git a/api/react_message.php b/api/react_message.php
index 469a7e5..131a5ce 100644
--- a/api/react_message.php
+++ b/api/react_message.php
@@ -49,7 +49,8 @@ try {
 
     // Registrar la reacción en el mensaje objetivo (no crear un nuevo "reaction" como mensaje saliente)
     try {
-        $update = ['reaction_emoji' => $emoji, 'reaction_to_message_id' => $message_id, 'updated_at' => date('Y-m-d H:i:s')];
+        // Avoid updating `updated_at` because older schemas may not have it
+        $update = ['reaction_emoji' => $emoji, 'reaction_to_message_id' => $message_id];
         // If send failed, optionally record a status on target (not mandatory)
         if (!$resp) $update['reaction_status'] = 'failed';
 
diff --git a/api/webhook.php b/api/webhook.php
index db916f7..7984023 100644
--- a/api/webhook.php
+++ b/api/webhook.php
@@ -253,7 +253,7 @@ class WhatsAppWebhook {
                     // Try to update the referenced message (by message_id or id)
                     $updated = $this->db->update(
                         'conversations',
-                        ['reaction_emoji' => $emoji, 'reaction_to_message_id' => $reactionTo, 'updated_at' => date('Y-m-d H:i:s')],
+                        ['reaction_emoji' => $emoji, 'reaction_to_message_id' => $reactionTo],
                         'message_id = :mid OR id = :mid',
                         ['mid' => $reactionTo]
                     );
diff --git a/conversations.php b/conversations.php
index 73d9233..fd712a7 100644
--- a/conversations.php
+++ b/conversations.php
@@ -2145,11 +2145,14 @@
                     let earliestId = null; // local var for earliest message id
                     if (data && data.success && Array.isArray(data.data)) {
                         messages = data.data;
+                        // Filtrar mensajes de tipo 'reaction' para que no aparezcan como elementos en la conversación
+                        messages = messages.filter(m => !(m && m.message_type === 'reaction'));
                         hasMore = !!data.has_more;
                         earliest = data.earliest || (messages[0] && messages[0].created_at) || null;
                         earliestId = data.earliest_id || (messages[0] && messages[0].id) || null;
                     } else if (Array.isArray(data)) {
                         messages = data;
+                        messages = messages.filter(m => !(m && m.message_type === 'reaction'));
                     }
 
                     // Filtrar mensajes vacíos (sin texto y sin media) para evitar que aparezcan placeholders "[Mensaje vacío]"