Could anybody help me with this, please?

[Kal_Lam]

Welcome to the community, @miriamkulinicova! This post discussed previously should help you solve your issue:

How do we control an unwanted submission from a user (person) who should have accidentally acquired the survey link?

Hi @Silvana You could do this by configuring your KoBoTooolbox account settings by checking the Require authentication to see forms and submit data which is present under the ACCOUNTS SETTINGS (as shown in the image below). [Image 2.png] Do not forget to click on SAVE CHANGES after making the changes. To ensure that your settings has been configured, re-login to your account and see if the chosen configuration is still on. After making this configuration, the user should not be able to …