diff --git a/.gitignore b/.gitignore
index f0913a8..e825849 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+/.env
 /.env.local
 /.env.local.php
 /.env.*.local
diff --git a/migrations/Version20240109170611.php b/migrations/Version20240109170611.php
index ec81069..3681250 100644
--- a/migrations/Version20240109170611.php
+++ b/migrations/Version20240109170611.php
@@ -33,9 +33,9 @@ public function up(Schema $schema): void
         $this->addSql('CREATE INDEX forms_deleted_at_idx ON forms (deleted_at)');
         $this->addSql('CREATE TABLE submissions (id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, form_id INTEGER NOT NULL, answers CLOB NOT NULL --(DC2Type:json)
         , created_at DATETIME NOT NULL --(DC2Type:datetime_immutable)
-        , read_at DATETIME NOT NULL --(DC2Type:datetime_immutable)
-        , flagged_at DATETIME NOT NULL --(DC2Type:datetime_immutable)
-        , deleted_at DATETIME NOT NULL --(DC2Type:datetime_immutable)
+        , read_at DATETIME --(DC2Type:datetime_immutable)
+        , flagged_at DATETIME --(DC2Type:datetime_immutable)
+        , deleted_at DATETIME --(DC2Type:datetime_immutable)
         , CONSTRAINT FK_3F6169F75FF69B7D FOREIGN KEY (form_id) REFERENCES forms (id) NOT DEFERRABLE INITIALLY IMMEDIATE)');
         $this->addSql('CREATE INDEX IDX_3F6169F75FF69B7D ON submissions (form_id)');
         $this->addSql('CREATE INDEX submissions_form_id_idx ON submissions (form_id, created_at)');
diff --git a/src/FieldTypes/Validators/RegExpValidator.php b/src/FieldTypes/Validators/RegExpValidator.php
index 2e36ed5..12d6d72 100644
--- a/src/FieldTypes/Validators/RegExpValidator.php
+++ b/src/FieldTypes/Validators/RegExpValidator.php
@@ -12,7 +12,7 @@ public function validate($value): bool {
         if ($this->pattern === null) {
             return true;
         }
-        return preg_match($this->pattern, $value) === 1;
+        return preg_match('!' . $this->pattern . '!u', $value) === 1;
     }
 
     public function getErrorMessage(): string {
diff --git a/src/PublicApi/Controller/FormController.php b/src/PublicApi/Controller/FormController.php
index e035df7..d58ee64 100644
--- a/src/PublicApi/Controller/FormController.php
+++ b/src/PublicApi/Controller/FormController.php
@@ -22,7 +22,7 @@ public function __construct(
     {
     }
 
-    #[Route('/api/forms/{hash}', name: 'public_api_form', methods: ['GET', 'POST'], format: 'json')]
+    #[Route('/api/forms/{hash}', name: 'public_api_form', methods: ['GET', 'POST', 'OPTIONS'], format: 'json')]
     public function form(Request $request, string $hash): JsonResponse
     {
         $form = $this->formService->getByHash($hash);
@@ -49,21 +49,26 @@ public function form(Request $request, string $hash): JsonResponse
             }
 
             $submitted = $this->formSubmissionService->submit($form->getId(), $data);
+            $response = $this->json($submitted);
+        } else {
+            $formFields = $this->formFieldService->getAllByFormId($form->getId());
 
-            return $this->json($submitted);
+            $response = $this->json([
+                'fields' => array_map(fn($formField) => [
+                    'type' => $formField->getType(),
+                    'name' => $formField->getName(),
+                    'label' => $formField->getLabel(),
+                    'hint' => $formField->getHint(),
+                    'isRequired' => $formField->getIsRequired(),
+                    'validations' => $formField->getValidations(),
+                ], $formFields),
+            ]);
         }
 
-        $formFields = $this->formFieldService->getAllByFormId($form->getId());
+        $response->headers->set('Access-Control-Allow-Origin', '*');
+        $response->headers->set('Access-Control-Allow-Headers', 'Content-Type');
+        $response->headers->set('Access-Control-Allow-Methods', 'GET, POST, OPTIONS');
 
-        return $this->json([
-            'fields' => array_map(fn($formField) => [
-                'type' => $formField->getType(),
-                'name' => $formField->getName(),
-                'label' => $formField->getLabel(),
-                'hint' => $formField->getHint(),
-                'isRequired' => $formField->getIsRequired(),
-                'validations' => $formField->getValidations(),
-            ], $formFields),
-        ]);
+        return $response;
     }
 }
\ No newline at end of file