The reason you don't see your creations would be that you are currently logged in anonymously, which is the feature that allows first time users to try out the system before signing up.
To access your original account, first log out from an anonymous account (you'll find the option by clicking on your profile picture in the top right), then log back in using your email address and password. This will take you to your actual account where you can see all of your creations.
If you are still experiencing issues please contact us by the support form.