diff --git a/world-id/sandbox/sandbox-access.mdx b/world-id/sandbox/sandbox-access.mdx
index a33a721..f60ead3 100644
--- a/world-id/sandbox/sandbox-access.mdx
+++ b/world-id/sandbox/sandbox-access.mdx
@@ -33,13 +33,34 @@ you to the external tester group directly.
 
 The sandbox build is distributed through a **private testing track on Google Play**.
 
+#### Request tester access
+
 1. In the [Developer Portal](https://developer.world.org), select **World ID Sandbox**
    from the sidebar.
-2. Enter the email address associated with your Google Play account to request tester
-   access.
-3. Once access is granted, scan the QR code or open the Google Play link on the same
-   page.
-4. Sign in with the same Google Account and install the **World ID (Sandbox)** build.
+2. Enter the email address for the Google Account you use with the Google Play Store,
+   then request tester access.
+3. Wait until access is granted before opening the Google Play testing link.
+
+#### Install the build
+
+1. On your Android device, open the Google Play Store and confirm that it is signed in
+   with the exact Google Account for which you requested tester access.
+2. If this is the account's first Google Play Store sign-in, complete the initial setup
+   and accept all Google Play Terms of Service before continuing.
+3. In the browser that will open the testing link, sign in to the same Google Account.
+   The browser and Google Play Store must use the same account; otherwise, Google Play
+   may report that the build is unavailable.
+4. Return to **World ID Sandbox** in the
+   [Developer Portal](https://developer.world.org). On your Android device, scan the QR
+   code or open the Google Play testing link.
+5. Install the **World ID (Sandbox)** build from Google Play.
+
+#### Troubleshooting FAQ
+
+- Confirm that the email used to request tester access matches the Google Account used
+  by both the browser and Google Play Store.
+- If the account has just signed in to Google Play for the first time, Google may need
+  time to recognize the new account. Wait at least **15 minutes** before opening the testing link again.
 
 ## 2. Point your integration at Sandbox