diff --git a/sample/src/App.tsx b/sample/src/App.tsx
index 246b8a98..916fca03 100644
--- a/sample/src/App.tsx
+++ b/sample/src/App.tsx
@@ -103,7 +103,7 @@ export type RootStackParamList = {
   Cart: undefined;
   CartModal: undefined;
   Settings: undefined;
-  BuyNow: {url: string; auth: string};
+  BuyNow: {url: string; auth?: string};
 };
 
 const Tab = createBottomTabNavigator<RootStackParamList>();
diff --git a/sample/src/components/BuyNowButton.tsx b/sample/src/components/BuyNowButton.tsx
index ec94dbb7..f5c2675b 100644
--- a/sample/src/components/BuyNowButton.tsx
+++ b/sample/src/components/BuyNowButton.tsx
@@ -57,9 +57,6 @@ export function BuyNowButton({
 
     try {
       const auth = await fetchToken();
-      if (!auth) {
-        throw new Error('Authentication required for this sample app');
-      }
 
       let checkoutUrl: string;
 
diff --git a/sample/src/screens/BuyNow/types.ts b/sample/src/screens/BuyNow/types.ts
index 9e5f569c..30312f15 100644
--- a/sample/src/screens/BuyNow/types.ts
+++ b/sample/src/screens/BuyNow/types.ts
@@ -1,5 +1,5 @@
 export type BuyNowStackParamList = {
-  Checkout: {url: string, auth: string};
+  Checkout: {url: string, auth?: string};
   Address: {id: string};
   Payment: {id: string};
 };