diff --git a/app/Http/Livewire/Chat/PublicChat.php b/app/Http/Livewire/Chat/PublicChat.php
index 3ebafda..74a5085 100755
--- a/app/Http/Livewire/Chat/PublicChat.php
+++ b/app/Http/Livewire/Chat/PublicChat.php
@@ -23,6 +23,7 @@ use App\Models\Tarifas;
 use App\Models\User;
 use Carbon\Carbon;
 use Illuminate\Support\Facades\Cache;
+use Illuminate\Support\Facades\Log;
 use Illuminate\Support\Facades\Hash;
 use Illuminate\Support\Facades\Mail;
 use Illuminate\Support\Str;
@@ -563,8 +564,10 @@ class PublicChat extends Component
 
             $datosPago = app(\App\Services\GeminiVisionService::class)->extraerPago($base64, $mimeType);
 
-            if (! $datosPago) {
-                $this->guardarMensajeBot($this->convId, "No pude leer el comprobante. Intenta con una foto mas clara.");
+            if (! $datosPago || isset($datosPago['__error']) || isset($datosPago['__parse_error'])) {
+                $detalle = $datosPago['__error'] ?? ($datosPago['__parse_error'] ?? '');
+                Log::warning('[PublicChat] Gemini error: ' . $detalle);
+                $this->guardarMensajeBot($this->convId, "No pude leer el comprobante. Intenta con una foto mas clara o con mejor iluminación.");
                 $this->cargarMensajes();
                 return;
             }
diff --git a/app/Services/CorreoImapService.php b/app/Services/CorreoImapService.php
index de0de89..b4e308e 100755
--- a/app/Services/CorreoImapService.php
+++ b/app/Services/CorreoImapService.php
@@ -51,7 +51,7 @@ class CorreoImapService
         }
 
         // Descargar un lote suficiente para cubrir la ventana de tiempo.
-        $fetchSize = min($total, max($limit * 4, 20));
+        $fetchSize = min($total, max($limit * 2, 20));
         $from = max(1, $total - $fetchSize + 1);
         $set  = "{$from}:{$total}";
 
@@ -67,9 +67,9 @@ class CorreoImapService
         foreach ($emails as $email) {
             $ts = $email['date'] ? @strtotime($email['date']) : false;
 
-            // Correo más antiguo que la ventana → parar
+            // Correo más antiguo que la ventana → saltar (no parar, pueden haber más nuevos)
             if ($ts !== false && $ts < $cutoff) {
-                break;
+                continue;
             }
 
             $result[] = $email;
diff --git a/app/Services/GeminiVisionService.php b/app/Services/GeminiVisionService.php
index 0c00e94..8c062de 100755
--- a/app/Services/GeminiVisionService.php
+++ b/app/Services/GeminiVisionService.php
@@ -15,7 +15,7 @@ class GeminiVisionService
     public function __construct()
     {
         $this->apiKey = ChatConfig::get('gemini_api_key', '');
-        $this->model  = ChatConfig::get('gemini_model', 'gemini-3.5-flash');
+        $this->model  = ChatConfig::get('gemini_model', 'gemini-2.0-flash');
     }
 
     public function extraerPago(string $base64, string $mimeType, ?int $usuarioId = null, string $canal = 'telegram'): ?array
@@ -36,8 +36,7 @@ class GeminiVisionService
             'contents'         => $contents,
             'generationConfig' => [
                 'temperature'     => 0.1,
-                'maxOutputTokens' => 8192,
-                'thinkingConfig'  => ['thinkingBudget' => 0],
+                'maxOutputTokens' => 512,
             ],
         ];
 
@@ -49,7 +48,7 @@ class GeminiVisionService
             $url = "https://generativelanguage.googleapis.com/{$ver}/models/{$this->model}:generateContent";
             try {
                 $resp = Http::withHeaders(['Content-Type' => 'application/json'])
-                    ->timeout(20)
+                    ->timeout(40)
                     ->post("{$url}?key={$this->apiKey}", $body);
 
                 if ($resp->successful()) {
diff --git a/app/Services/PagoValidadorService.php b/app/Services/PagoValidadorService.php
index 0add9b5..67f1e1d 100755
--- a/app/Services/PagoValidadorService.php
+++ b/app/Services/PagoValidadorService.php
@@ -122,7 +122,7 @@ class PagoValidadorService
 
             // ── 3. Hora exacta ───────────────────────────────────────
             if ($horaIA && ($datosCorreo['hora'] ?? '')) {
-                if (! $this->horaProxima($horaIA, $datosCorreo['hora'], 0)) {
+                if (! $this->horaProxima($horaIA, $datosCorreo['hora'], 3)) {
                     Log::info("[PagoValidador] Correo #{$i}: hora no coincide (ia={$horaIA} correo={$datosCorreo['hora']})");
                     continue;
                 }
@@ -265,6 +265,6 @@ class PagoValidadorService
                 $coincidencias++;
             }
         }
-        return $coincidencias >= 2;
+        return $coincidencias >= 1;
     }
 }