Occasionally, it can happen that you've mistakenly checked off the wrong task. This can disrupt the cleaning plan and might result in an incorrect number of stars. We offer you the option to undo completed tasks. To do this, follow these steps in the shared apartment cleaning plan:

1. Go to the 'Overview' page and click on 'Completed Tasks.'
2. Now, long-press on the task that you mistakenly checked off.
3. At the bottom, you'll see the option 'Not Completed After All.'
4. Click on the option, and everything will be reset to the previous state.