If only part of your setup is currently visible, your data is not gone.
In some cases, you may simply be seeing the limits of the Personal Free plan. For example, this can happen if your account contains more scenarios or calendar tabs than Personal Free includes.
Your existing data is not deleted just because it is currently outside the Free plan limits.
To see your full setup again, you can start the Personal Pro trial. During the 14-day trial, your additional scenarios, calendar tabs, and other Pro features become available again.
You can cancel the trial anytime before it ends if you do not want to continue with a paid subscription.