diff --git a/Backend/MotoresArgentinosV2.API/Program.cs b/Backend/MotoresArgentinosV2.API/Program.cs
index 4c5c035..78b5fd9 100644
--- a/Backend/MotoresArgentinosV2.API/Program.cs
+++ b/Backend/MotoresArgentinosV2.API/Program.cs
@@ -20,7 +20,11 @@ var builder = WebApplication.CreateBuilder(args);
 builder.Configuration.AddEnvironmentVariables();
 
 // 🔒 KESTREL HARDENING
-builder.WebHost.ConfigureKestrel(options => options.AddServerHeader = false);
+builder.WebHost.ConfigureKestrel(options => 
+{
+    options.AddServerHeader = false;
+    options.Limits.MaxRequestBodySize = 104857600; // 100 MB
+});
 
 // LOGGING
 builder.Logging.ClearProviders();
diff --git a/Frontend/nginx.conf b/Frontend/nginx.conf
index 74e0d43..dc95957 100644
--- a/Frontend/nginx.conf
+++ b/Frontend/nginx.conf
@@ -3,7 +3,7 @@ server {
     server_name localhost;
     
     # Seguridad: Limitar tamaño de subida para prevenir DoS
-    client_max_body_size 20M;
+    client_max_body_size 100M;
 
     # Sitemap dinámico (generado por backend en volumen compartido)
     location = /sitemap.xml {
diff --git a/Frontend/src/components/FormularioAviso.tsx b/Frontend/src/components/FormularioAviso.tsx
index e300176..299a4e3 100644
--- a/Frontend/src/components/FormularioAviso.tsx
+++ b/Frontend/src/components/FormularioAviso.tsx
@@ -1376,7 +1376,7 @@ export default function FormularioAviso({
               <input
                 type="text"
                 value={contactData.phone}
-                disabled={isAdmin}
+                disabled
                 onChange={(e) => {
                   const val = e.target.value;
                   setContactData({
@@ -1390,7 +1390,7 @@ export default function FormularioAviso({
                 placeholder={
                   isAdmin
                     ? "Selecciona o crea un vendedor arriba"
-                    : "+54 9 221 ..."
+                    : "Modificable en tu perfil"
                 }
               />