Formfacade supports public forms only. You must disable Google Forms' features that require signin to use Formfacade. You are facing issues with submit because you have enabled the "Send respondents a copy of their response" option in this form. You must disable this option and then click on the addon icon > click Formfacade > click More options > click Update to sync the changes with Formfacade. You can then use the form to collect responses. For more details, refer to the help article below. Disable features that require signin https://formfacade.com/website/form-not-publicly-visible-fix.html If you need to send confirmation emails, you can set it up directly in Formfacade. Login to Formfacade > click Forms > click on the form to open it > Edit page will be displayed > click Responses > In the Responses page, click on the three dots more icon next to the Submitted status > click Notify respondent > follow the prompts to complete the email set up.