To utilize the FDS Web App features, you have to be a registered user.
Go to Sign up form, and fill in the email and password fields.
Note: the provided email address will be used to notify the user of completed calculations.
Fill in Log in form with the email and password you have provided during Sign up process.
Only logged users can employ the FDS Web App features.
The registered users can access Results tab which contains the results of all completed calculations.