diff --git a/app/Services/Apis/Samsung/DecryptedListResponse.php b/app/Services/Apis/Samsung/DecryptedListResponse.php
index f32597727..e7be28d97 100644
--- a/app/Services/Apis/Samsung/DecryptedListResponse.php
+++ b/app/Services/Apis/Samsung/DecryptedListResponse.php
@@ -52,6 +52,10 @@ public function __construct(string $key, string $content, string $forum){
         $list = json_decode($dec->getData(), true);
         if(!is_array($list))
             throw new InvalidResponse(sprintf("invalid data field on response %s", $content));
+
+        if(count($list) == 0)
+            throw new EmptyResponse("response not found");
+
         $this->payload = $list;
     }
 
diff --git a/app/Services/Apis/Samsung/DecryptedSingleResponse.php b/app/Services/Apis/Samsung/DecryptedSingleResponse.php
index 569f2c1ce..94bf34e84 100644
--- a/app/Services/Apis/Samsung/DecryptedSingleResponse.php
+++ b/app/Services/Apis/Samsung/DecryptedSingleResponse.php
@@ -45,6 +45,9 @@ public function __construct(string $key, string $content,  string $forum){
         if(!is_array($list))
             throw new InvalidResponse(sprintf("invalid data field on response %s", $content));
         $this->payload = count($list) == 1 ? $list[0] : $list;
+
+        if(count($this->payload) == 0)
+            throw new EmptyResponse("response not found");
     }
 
 
diff --git a/app/Services/Apis/Samsung/SamsungRegistrationAPI.php b/app/Services/Apis/Samsung/SamsungRegistrationAPI.php
index 522989e80..178f79fe3 100644
--- a/app/Services/Apis/Samsung/SamsungRegistrationAPI.php
+++ b/app/Services/Apis/Samsung/SamsungRegistrationAPI.php
@@ -11,7 +11,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  **/
-use GuzzleHttp\Client;
 use Exception;
 use GuzzleHttp\ClientInterface;
 use GuzzleHttp\Exception\RequestException;
@@ -91,11 +90,19 @@ public function checkUser(Summit $summit, string $userId, string $region = Regio
         }
         catch (RequestException $ex) {
             Log::warning($ex->getMessage());
-            return null;
+            return [];
+        }
+        catch(EmptyResponse $ex){
+            Log::warning($ex->getMessage());
+            return [];
+        }
+        catch (InvalidResponse $ex){
+            Log::warning($ex->getMessage());
+            return [];
         }
         catch (Exception $ex) {
             Log::error($ex->getMessage());
-            return null;
+            return [];
         }
     }
 
@@ -114,7 +121,6 @@ public function checkEmail(Summit $summit,string $email, string $region = Region
 
             Log::debug(sprintf("SamsungRegistrationAPI::checkEmail POST %s payload %s", $this->endpoint, $request));
 
-
             // http://docs.guzzlephp.org/en/stable/request-options.html
             $response = $this->client->request('POST',
                 $this->endpoint,
@@ -138,11 +144,19 @@ public function checkEmail(Summit $summit,string $email, string $region = Region
         }
         catch (RequestException $ex) {
             Log::warning($ex->getMessage());
-            return null;
+            return [];
+        }
+        catch(EmptyResponse $ex){
+            Log::warning($ex->getMessage());
+            return [];
+        }
+        catch (InvalidResponse $ex){
+            Log::warning($ex->getMessage());
+            return [];
         }
         catch (Exception $ex) {
             Log::error($ex->getMessage());
-            return null;
+            return [];
         }
     }
 
@@ -182,6 +196,14 @@ public function userList(Summit $summit, string $region = Regions::US)
             Log::warning($ex->getMessage());
             return null;
         }
+        catch(EmptyResponse $ex){
+            Log::warning($ex->getMessage());
+            return null;
+        }
+        catch(InvalidResponse $ex){
+            Log::warning($ex->getMessage());
+            return null;
+        }
         catch (Exception $ex) {
             Log::error($ex->getMessage());
             return null;
diff --git a/app/Services/Model/Imp/RegistrationIngestionService.php b/app/Services/Model/Imp/RegistrationIngestionService.php
index 9f5dad912..4c014e32b 100644
--- a/app/Services/Model/Imp/RegistrationIngestionService.php
+++ b/app/Services/Model/Imp/RegistrationIngestionService.php
@@ -171,6 +171,7 @@ public function ingestExternalAttendee($summit_id, $index, $external_attendee, I
                 $cancelled = $external_attendee['cancelled'] ?? false;
 
                 $ticket_type = $summit->getTicketTypeByExternalId($ticket_class['id']);
+
                 if (is_null($ticket_type)) {
                     // create ticket type if it does not exists
                     Log::debug(sprintf("RegistrationIngestionService::ingestSummit: ticket class %s does not exists", $ticket_class['id']));
@@ -640,6 +641,9 @@ public function ingestSummit(Summit $summit): void
                 Log::debug(sprintf("RegistrationIngestionService::ingestSummit getting external attendees page %s", $page));
                 $response = $feed->getAttendees($page, $summit->getExternalRegistrationFeedLastIngestDate());
 
+                if(is_null($response))
+                    throw new ValidationException("Response is empty");
+
                 if ($response->hasData()) {
                     $shouldMarkProcess = true;
                 } else {
diff --git a/app/Services/Model/Strategies/TicketFinder/Strategies/TicketFinderByExternalFeedStrategy.php b/app/Services/Model/Strategies/TicketFinder/Strategies/TicketFinderByExternalFeedStrategy.php
index 3f991fb65..282995d7b 100644
--- a/app/Services/Model/Strategies/TicketFinder/Strategies/TicketFinderByExternalFeedStrategy.php
+++ b/app/Services/Model/Strategies/TicketFinder/Strategies/TicketFinderByExternalFeedStrategy.php
@@ -76,6 +76,7 @@ public function find(): ?SummitAttendeeTicket
         Log::debug(sprintf("TicketFinderByExternalFeedStrategy::find ticket_criteria %s", $this->ticket_criteria));
 
         if($this->feed->isValidQRCode($this->ticket_criteria)){
+            Log::debug(sprintf("TicketFinderByExternalFeedStrategy::find ticket_criteria %s is a valid QRCode", $this->ticket_criteria));
             $externalAttendeeId = $this->feed->getExternalUserIdFromQRCode($this->ticket_criteria);
             // check first if we have it locally
             $attendee = $this->attendee_repository->getBySummitAndExternalId
@@ -83,6 +84,11 @@ public function find(): ?SummitAttendeeTicket
                 $this->summit, $externalAttendeeId
             );
 
+            if(!is_null($attendee) && !$attendee->hasTickets()){
+                Log::debug(sprintf("TicketFinderByExternalFeedStrategy::find attendee %s has no tickets, re fetch it from external feed", $externalAttendeeId));
+                $attendee = null;
+            }
+
             if(is_null($attendee)) {
 
                 Log::debug
@@ -123,8 +129,10 @@ public function find(): ?SummitAttendeeTicket
 
             return $attendee->getFirstTicket();
         }
+
         if(filter_var($this->ticket_criteria, FILTER_VALIDATE_EMAIL)){
 
+            Log::debug(sprintf("TicketFinderByExternalFeedStrategy::find ticket_criteria %s is a valid email", $this->ticket_criteria));
             $externalAttendeeEmail = $this->ticket_criteria;
             // check first if we have it locally
             $attendee = $this->attendee_repository->getBySummitAndEmail
@@ -132,6 +140,11 @@ public function find(): ?SummitAttendeeTicket
                 $this->summit, $externalAttendeeEmail
             );
 
+            if(!is_null($attendee) && !$attendee->hasTickets()){
+                Log::debug(sprintf("TicketFinderByExternalFeedStrategy::find attendee %s has no tickets, re fetch it from external feed", $externalAttendeeEmail));
+                $attendee = null;
+            }
+
             if(is_null($attendee)) {
 
                 Log::debug
@@ -170,6 +183,7 @@ public function find(): ?SummitAttendeeTicket
             }
             return $attendee->getFirstTicket();
         }
+        Log::debug(sprintf("TicketFinderByExternalFeedStrategy::find ticket_criteria %s is not a valid QRCode or email", $this->ticket_criteria));
         return null;
     }
 }
\ No newline at end of file