Invalid request: a sheet with the name Data-Add already exists

i created a survey using ODK build, and after finalising the forms, it says 'sending failed' because the request is invalid as ' a sheet with the name 'data-add' already exists '

Welcome to the ODK forum, @Sabrina_Al_Riyami! We're glad you're here. When you get a chance, please introduce yourself on this forum thread. I'd also encourage you to add a picture as your avatar because it helps build community!

Can you provide any screenshots of the error? What are your server settings and where are you sending the submissions?