You can download the Qurio app again from the App Store (Apple) or Google Play Store (Android).
When you open the Qurio app, you will see the ‘Join Qurio’ screen. Don’t worry, as you can still sign in to your existing Qurio profile using the email address that you’ve used previously.
If you enter your email address in the box on this screen, you will receive an email with which you can sign back in. You will then be able to view your profile and any videos or content you’ve previously shared within the app.