Hi @Simakechula,
Would you mind having a look at our support article Editing or Deleting a Single Submission to learn how to edit or delete a single record from the KoBoToolbox server. Also please feel free to have a look at the support article Deleting a Project to learn how to delete a project from KoBoToolbox server.
In addition, you could also delete a group of records through a single click in KoBoToolbox. For this, kindly please feel to have a look at the post discussed previously:
Have a great day!
