Your data is stored with your account. Just like Instagram, Snapchat or other modern apps. Your data is not stored on your phone, or in your iCloud account. Your data is stored securely on our servers and is only accessible with the account you used when you entered it.
You'll need to login with the original email and password or Facebook account to access your data.
If you're having trouble finding your account please message me from the Chat with Support option on the More tab.