diff --git a/app/Services/Payments/PaddleWebhookVerifier.php b/app/Services/Payments/PaddleWebhookVerifier.php
index bce9424..ee069c7 100644
--- a/app/Services/Payments/PaddleWebhookVerifier.php
+++ b/app/Services/Payments/PaddleWebhookVerifier.php
@@ -1,7 +1,9 @@
 <?php
+
 namespace App\Services\Payments;
 
 use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Log;
 use RuntimeException;
 
 final class PaddleWebhookVerifier implements WebhookVerifier
@@ -10,15 +12,66 @@ final class PaddleWebhookVerifier implements WebhookVerifier
     {
         $secret = (string) config('rsync-studio.paddle.webhook_secret');
         $header = (string) $request->header('Paddle-Signature');
-        if ($secret === '' || $header === '') throw new RuntimeException('Paddle webhook verification is not configured.');
+
+        if ($secret === '' || $header === '') {
+            throw new RuntimeException('Paddle webhook verification is not configured.');
+        }
+
         $parts = [];
-        foreach (explode(';', $header) as $part) { [$k,$v] = array_pad(explode('=',trim($part),2),2,null); if ($k && $v) $parts[$k][]=$v; }
-        $ts = isset($parts['ts'][0]) ? (int)$parts['ts'][0] : 0;
+
+        foreach (explode(';', $header) as $part) {
+            [$key, $value] = array_pad(
+                explode('=', trim($part), 2),
+                2,
+                null
+            );
+
+            if ($key && $value) {
+                $parts[$key][] = $value;
+            }
+        }
+
+        $timestamp = isset($parts['ts'][0])
+            ? (int) $parts['ts'][0]
+            : 0;
+
         $signatures = $parts['h1'] ?? [];
-        $tolerance = max(1,(int)config('rsync-studio.paddle.timestamp_tolerance',300));
-        if (!$ts || abs(time()-$ts)>$tolerance) throw new RuntimeException('Paddle webhook timestamp is outside the allowed tolerance.');
-        $expected = hash_hmac('sha256', $ts.':'.$rawBody, $secret);
-        foreach ($signatures as $signature) if (hash_equals($expected,$signature)) return;
+
+        $tolerance = max(
+            1,
+            (int) config('rsync-studio.paddle.timestamp_tolerance', 300)
+        );
+
+        if (!$timestamp || abs(time() - $timestamp) > $tolerance) {
+            throw new RuntimeException(
+                'Paddle webhook timestamp is outside the allowed tolerance.'
+            );
+        }
+
+        $signedPayload = $timestamp . ':' . $rawBody;
+
+        $expected = hash_hmac(
+            'sha256',
+            $signedPayload,
+            $secret
+        );
+
+        Log::info('Paddle webhook signature debug', [
+            'header' => $header,
+            'timestamp' => $timestamp,
+            'server_timestamp' => time(),
+            'body_length' => strlen($rawBody),
+            'body_sha256' => hash('sha256', $rawBody),
+            'expected_h1' => $expected,
+            'received_h1' => $signatures,
+        ]);
+
+        foreach ($signatures as $signature) {
+            if (hash_equals($expected, $signature)) {
+                return;
+            }
+        }
+
         throw new RuntimeException('Paddle webhook signature is invalid.');
     }
 }