Hello belnapme!

I am afraid it is not possible to erase progress from an account. Therefore, you wouldn't be able to clear the completion you already have for this content. However, notwithstanding the fact that the content was already completed, it can always be rewatched/done again, as many times as you want. Also, many of our practice questions have a database of questions, meaning that you will not get the same questions as before. And, of course, you can always create a new account!

I am sorry I was not able to be of more help in this situation, but please let me know if I can be of any further assistance.

Kind regards,

Alex