diff --git a/admin/DashboardController.php b/admin/DashboardController.php
index 9692bd6..5333c88 100644
--- a/admin/DashboardController.php
+++ b/admin/DashboardController.php
@@ -332,26 +332,26 @@ HTML;
     private static function typeLabel(string $field, string $type): string
     {
         if ($field === 'statuses') {
-            $cls = match ($type) {
-                'sent'      => 'badge-blue',
-                'delivered' => 'badge-green',
-                'read'      => 'badge-teal',
-                'failed'    => 'badge-red',
-                default     => 'badge-gray',
-            };
+            switch ($type) {
+                case 'sent':      $cls = 'badge-blue';  break;
+                case 'delivered': $cls = 'badge-green'; break;
+                case 'read':      $cls = 'badge-teal';  break;
+                case 'failed':    $cls = 'badge-red';   break;
+                default:          $cls = 'badge-gray';  break;
+            }
             return '<span class="badge ' . $cls . '">' . self::h($type) . '</span>';
         }
-        return match ($type) {
-            'text'        => '💬 Texto',
-            'image'       => '🖼️ Imagen',
-            'audio'       => '🎵 Audio',
-            'video'       => '🎥 Video',
-            'document'    => '📄 Documento',
-            'location'    => '📍 Ubicación',
-            'interactive' => '🔘 Interactivo',
-            'button'      => '🔲 Botón',
-            default       => self::h($type),
-        };
+        switch ($type) {
+            case 'text':        return '&#128172; Texto';
+            case 'image':       return '&#128247; Imagen';
+            case 'audio':       return '&#127925; Audio';
+            case 'video':       return '&#127916; Video';
+            case 'document':    return '&#128196; Documento';
+            case 'location':    return '&#128205; Ubicaci&oacute;n';
+            case 'interactive': return '&#128280; Interactivo';
+            case 'button':      return '&#128306; Bot&oacute;n';
+            default:            return self::h($type);
+        }
     }
 
     // ─── Render ───────────────────────────────────────────────────────────────
diff --git a/admin/v1/WpWebhook.php b/admin/v1/WpWebhook.php
index 0fcef40..0f1c9fa 100644
--- a/admin/v1/WpWebhook.php
+++ b/admin/v1/WpWebhook.php
@@ -92,11 +92,13 @@ class WpWebhook
                 $field = $change['field'] ?? '';
                 $value = $change['value'] ?? [];
 
-                match ($field) {
-                    'messages', 'conversations' => self::handleMessages($value),
-                    'statuses'                  => self::handleStatuses($value),
-                    default                     => self::log('INFO', "Campo no manejado: $field"),
-                };
+                if ($field === 'messages' || $field === 'conversations') {
+                    self::handleMessages($value);
+                } elseif ($field === 'statuses') {
+                    self::handleStatuses($value);
+                } else {
+                    self::log('INFO', "Campo no manejado: $field");
+                }
             }
         }
 
@@ -140,19 +142,19 @@ class WpWebhook
                 'display_phone'   => $displayPhone,
             ];
 
-            match ($type) {
-                'text'        => self::handleText($msg, $context),
-                'image'       => self::handleMedia($msg, $context, 'image'),
-                'audio'       => self::handleMedia($msg, $context, 'audio'),
-                'video'       => self::handleMedia($msg, $context, 'video'),
-                'document'    => self::handleMedia($msg, $context, 'document'),
-                'sticker'     => self::handleMedia($msg, $context, 'sticker'),
-                'location'    => self::handleLocation($msg, $context),
-                'interactive' => self::handleInteractive($msg, $context),
-                'button'      => self::handleButton($msg, $context),
-                'reaction'    => self::handleReaction($msg, $context),
-                default       => self::log('INFO', "Tipo de mensaje no manejado: $type | from=$from"),
-            };
+            switch ($type) {
+                case 'text':        self::handleText($msg, $context);                  break;
+                case 'image':       self::handleMedia($msg, $context, 'image');        break;
+                case 'audio':       self::handleMedia($msg, $context, 'audio');        break;
+                case 'video':       self::handleMedia($msg, $context, 'video');        break;
+                case 'document':    self::handleMedia($msg, $context, 'document');     break;
+                case 'sticker':     self::handleMedia($msg, $context, 'sticker');      break;
+                case 'location':    self::handleLocation($msg, $context);              break;
+                case 'interactive': self::handleInteractive($msg, $context);           break;
+                case 'button':      self::handleButton($msg, $context);               break;
+                case 'reaction':    self::handleReaction($msg, $context);              break;
+                default:            self::log('INFO', "Tipo de mensaje no manejado: $type | from=$from"); break;
+            }
         }
 
         // Estados que pueden venir dentro del mismo field 'messages'
@@ -198,11 +200,13 @@ class WpWebhook
     private static function handleInteractive(array $msg, array $ctx): void
     {
         $iType = $msg['interactive']['type'] ?? '';
-        $reply = match ($iType) {
-            'button_reply'  => $msg['interactive']['button_reply']  ?? [],
-            'list_reply'    => $msg['interactive']['list_reply']    ?? [],
-            default         => [],
-        };
+        if ($iType === 'button_reply') {
+            $reply = $msg['interactive']['button_reply'] ?? [];
+        } elseif ($iType === 'list_reply') {
+            $reply = $msg['interactive']['list_reply'] ?? [];
+        } else {
+            $reply = [];
+        }
         $preview = $iType . ': ' . json_encode($reply);
         self::log('MSG', "[INTERACTIVE/$iType] {$ctx['from']} | reply=" . json_encode($reply));
         self::saveWebhookLog('messages', $ctx['from'], $ctx['name'], 'interactive', $preview);
@@ -262,7 +266,7 @@ class WpWebhook
         }
 
         $sigHeader = $_SERVER['HTTP_X_HUB_SIGNATURE_256'] ?? '';
-        if (!str_starts_with($sigHeader, 'sha256=')) {
+        if (strpos($sigHeader, 'sha256=') !== 0) {
             self::respond(401, ['error' => 'Firma ausente']);
         }
 
@@ -366,7 +370,7 @@ class WpWebhook
         }
     }
 
-    private static function respond(int $code, array $body): never
+    private static function respond(int $code, array $body): void
     {
         http_response_code($code);
         header('Content-Type: application/json; charset=utf-8');
diff --git a/config/env.php b/config/env.php
index cf1cb2b..9865bc7 100644
--- a/config/env.php
+++ b/config/env.php
@@ -15,10 +15,10 @@ declare(strict_types=1);
     foreach ($lines as $line) {
         $line = trim($line);
         // Ignorar comentarios
-        if ($line === '' || str_starts_with($line, '#')) {
+        if ($line === '' || strpos($line, '#') === 0) {
             continue;
         }
-        if (!str_contains($line, '=')) {
+        if (strpos($line, '=') === false) {
             continue;
         }
         [$key, $value] = explode('=', $line, 2);
@@ -32,7 +32,7 @@ declare(strict_types=1);
     }
 })();
 
-function env(string $key, mixed $default = null): mixed
+function env(string $key, $default = null)
 {
     return $_ENV[$key] ?? getenv($key) ?: $default;
 }
diff --git a/index.php b/index.php
index c0e13b4..2dd3a3c 100644
--- a/index.php
+++ b/index.php
@@ -5,13 +5,13 @@ $base = '';
 if (file_exists(__DIR__ . '/.env')) {
     foreach (file(__DIR__ . '/.env') as $line) {
         $line = trim($line);
-        if (str_starts_with($line, 'APP_BASE=')) {
+        if (strpos($line, 'APP_BASE=') === 0) {
             $base = rtrim(trim(explode('=', $line, 2)[1]), '/');
             break;
         }
     }
 }
-if ($base !== '' && str_starts_with($_SERVER['REQUEST_URI'], $base)) {
+if ($base !== '' && strpos($_SERVER['REQUEST_URI'], $base) === 0) {
     $_SERVER['REQUEST_URI'] = substr($_SERVER['REQUEST_URI'], strlen($base)) ?: '/';
 }
 require_once __DIR__ . '/public/index.php';
diff --git a/middleware/Auth.php b/middleware/Auth.php
index 6e6b1d2..7a41ccf 100644
--- a/middleware/Auth.php
+++ b/middleware/Auth.php
@@ -19,7 +19,7 @@ class Auth
                ?? $_SERVER['REDIRECT_HTTP_AUTHORIZATION']
                ?? '';
 
-        if (!str_starts_with($header, 'Bearer ')) {
+        if (strpos($header, 'Bearer ') !== 0) {
             self::abort(401, 'Token de autorización requerido.');
         }
 
@@ -78,7 +78,7 @@ class Auth
         return base64_decode(strtr($data, '-_', '+/'));
     }
 
-    private static function abort(int $code, string $message): never
+    private static function abort(int $code, string $message): void
     {
         http_response_code($code);
         header('Content-Type: application/json; charset=utf-8');