I recently encountered this problem where I was unable to create Sandbox users to test in-app purchases/subscriptions for the app that I am building.

I posted about this issue in the official Apple Developer Support forum, here’s the gist of the issue to understand what happens.

Sandbox Page is Empty

After logging into Apple Developer account, you can add the sandbox users by going to App Store Connect → Users and Access → Sandbox.

But here’s thing, when you visit this page, there is nothing. It is completely empty. You see some sort of content while the page loads, for a fraction of a second and then it’s gone.

And you end up with an empty Sandbox page like this:

But the rest of the pages here work just fine. For example, look at the ‘People’ tab:

When I posted about this in the official forums, it turned out that the issue was not isolated and a LOT more people were exactly in the same situation as me.

Fix for Sandbox Page Empty issue

Luckily, one of the users have posted a solution which I will write in a little detailed manner here:

1. Login to your Apple Developer Account.
2. Go to App Store Connect → Users and Access → Sandbox. Here the page will be empty. That is fine and expected.
3. Now, click on any other tab, for example, click on the ‘People’ tab.
4. Now, the important part: Disconnect from the internet. Turn off your wifi or personal hotspot and completely disconnect from the web.
5. And once you are off the network, click on the ‘Sandbox’ tab again.
6. Now you will see a ‘+’ button and some content. Click on the button and fill in all the details needed. But, do not submit the form.
7. Turn on your internet connection and once you are conncted to the internet, click on the submit button and you’re all set.

Now you should be able to test your in-app purchases and subscriptions using this sandbox user.

Hope this helped you fix the issue!