If you want to start from the beginning again, from the very first lesson and without any words in your Vocab, you can contact our Customer Service team here and request we reset your progress.
Resetting your progress removes all completed lessons and your personal Vocab. Please be aware that if we do this, there's no way to reverse it. Your progress will be lost and you will have to start from scratch again.
Please do not delete your Babbel account. Doing so would result in the loss of your entire account, including any subscriptions you might have as well as past invoices. It's not possible to restore a deleted account and subscription.