If you've just signed up and installed an application on your domain but the splash page is still showing up in place of your app, you'll need to clear your browser cache.
Reason This May Happen
You've likely loaded the default page in your browser after the domain was registered and it’s now cached in the browser.
We drop default files (default.html) in every hosting account when a user signs up. These files get overwritten by WordPress, however browsers can sometimes store the splash page after viewing.