diff --git a/app/Filament/Resources/Coupons/Tables/CouponsTable.php b/app/Filament/Resources/Coupons/Tables/CouponsTable.php
index 99d68c9..167fc2b 100644
--- a/app/Filament/Resources/Coupons/Tables/CouponsTable.php
+++ b/app/Filament/Resources/Coupons/Tables/CouponsTable.php
@@ -4,6 +4,7 @@ namespace App\Filament\Resources\Coupons\Tables;
 
 use App\Filament\Tables\Filters\CreatedAtDateFilter;
 use Filament\Actions\ViewAction;
+use Filament\Actions\DeleteAction;
 use Filament\Tables\Columns\TextColumn;
 use Filament\Tables\Table;
 
@@ -37,6 +38,7 @@ class CouponsTable
             ])
             ->recordActions([
                 ViewAction::make(),
+                DeleteAction::make(),
             ]);
     }
 }
diff --git a/app/Http/Controllers/VerificationController.php b/app/Http/Controllers/VerificationController.php
index 643817a..316139f 100644
--- a/app/Http/Controllers/VerificationController.php
+++ b/app/Http/Controllers/VerificationController.php
@@ -120,17 +120,86 @@ class VerificationController extends Controller
 
     public function congratulations(): View|RedirectResponse
     {
-        if (! session()->has('coupon_code') && ! request()->cookie(self::DEVICE_COOKIE_NAME)) {
+        // #region agent log
+        $debugLog = static function (string $hypothesisId, string $message, array $data = []): void {
+            file_put_contents(
+                base_path('.cursor/debug-c4d726.log'),
+                json_encode([
+                    'sessionId' => 'c4d726',
+                    'hypothesisId' => $hypothesisId,
+                    'location' => 'VerificationController::congratulations',
+                    'message' => $message,
+                    'data' => $data,
+                    'timestamp' => (int) round(microtime(true) * 1000),
+                ]).PHP_EOL,
+                FILE_APPEND
+            );
+        };
+        // #endregion
+
+        $hasSessionCoupon = session()->has('coupon_code');
+        $hasDeviceCookie = (bool) request()->cookie(self::DEVICE_COOKIE_NAME);
+        $sessionCode = session()->get('coupon_code');
+
+        // #region agent log
+        $debugLog('A', 'entry_state', [
+            'hasSessionCoupon' => $hasSessionCoupon,
+            'hasDeviceCookie' => $hasDeviceCookie,
+            'sessionCodePresent' => $sessionCode !== null && $sessionCode !== '',
+            'verifyPhone' => session()->get('verify_phone'),
+        ]);
+        // #endregion
+
+        if (! $hasSessionCoupon && ! $hasDeviceCookie) {
+            // #region agent log
+            $debugLog('B', 'redirect_no_session_or_cookie', []);
+            // #endregion
+
             return redirect()->route('verification.index');
         }
 
-        $code = session()->get('coupon_code');
+        $code = null;
+
+        if ($sessionCode && Coupon::query()->where('code', $sessionCode)->exists()) {
+            $code = $sessionCode;
+
+            // #region agent log
+            $debugLog('E', 'session_code_db_validation', [
+                'codeFromSession' => $sessionCode,
+                'existsInDb' => true,
+            ]);
+            // #endregion
+        } elseif ($sessionCode) {
+            session()->forget('coupon_code');
+
+            // #region agent log
+            $debugLog('E', 'session_code_db_validation', [
+                'codeFromSession' => $sessionCode,
+                'existsInDb' => false,
+                'action' => 'forgot_stale_session_code',
+            ]);
+            // #endregion
+        }
 
         if (! $code) {
             $phone = $this->phoneFromDeviceCookie();
 
+            // #region agent log
+            $debugLog('C', 'cookie_phone_lookup', [
+                'phoneFromCookie' => $phone,
+            ]);
+            // #endregion
+
             if ($phone) {
                 $coupon = Coupon::query()->where('phone', $phone)->first();
+
+                // #region agent log
+                $debugLog('C', 'db_lookup_from_cookie', [
+                    'phone' => $phone,
+                    'couponFound' => $coupon !== null,
+                ]);
+                // #endregion
+
                 if ($coupon) {
                     $code = $coupon->code;
                     session()->put('coupon_code', $code);
@@ -139,7 +208,16 @@ class VerificationController extends Controller
         }
 
         if (! $code && session()->has('verify_phone')) {
-            $coupon = Coupon::query()->where('phone', session()->get('verify_phone'))->first();
+            $verifyPhone = session()->get('verify_phone');
+            $coupon = Coupon::query()->where('phone', $verifyPhone)->first();
+
+            // #region agent log
+            $debugLog('D', 'db_lookup_from_verify_phone', [
+                'verifyPhone' => $verifyPhone,
+                'couponFound' => $coupon !== null,
+            ]);
+            // #endregion
+
             if ($coupon) {
                 $code = $coupon->code;
                 session()->put('coupon_code', $code);
@@ -147,11 +225,21 @@ class VerificationController extends Controller
         }
 
         if (! $code) {
+            // #region agent log
+            $debugLog('E', 'redirect_no_valid_code', []);
+            // #endregion
+
             return redirect()
                 ->route('verification.index')
                 ->withoutCookie(self::DEVICE_COOKIE_NAME);
         }
 
+        // #region agent log
+        $debugLog('A', 'rendering_view', [
+            'code' => $code,
+        ]);
+        // #endregion
+
         return view('verification.congratulations', [
             'code' => $code,
         ]);
diff --git a/tests/Feature/VerificationFlowTest.php b/tests/Feature/VerificationFlowTest.php
index 21dac10..1ea5299 100644
--- a/tests/Feature/VerificationFlowTest.php
+++ b/tests/Feature/VerificationFlowTest.php
@@ -146,6 +146,14 @@ class VerificationFlowTest extends TestCase
             ->assertSee($coupon->code);
     }
 
+    public function test_congratulations_redirects_when_session_coupon_missing_from_db(): void
+    {
+        $this->withSession(['coupon_code' => '9_STALE'])
+            ->get(route('verification.congratulations'))
+            ->assertRedirect(route('verification.index'))
+            ->assertSessionMissing('coupon_code');
+    }
+
     public function test_send_otp_is_rate_limited(): void
     {
         for ($i = 0; $i < 3; $i++) {