Hey @Nazia 

The Signup Form Troubleshooting Guide will walk you through all the likely issues to test.

If your form is not submitting when you click the Submit button:

• Verify that the list the form is connected to has not been deleted.
• Verify that the button is a Submit button, not a Close button.
• Check your inbox for a confirmation email. If your list is set to double opt-in, you will not be added to it until you confirm your subscription.

If people are filling out your form but not being added to your list: 

• Make sure that you’ve selected a list in the form’s button settings. 
• Check your list’s opt-in settings. If the list is set to double opt-in (recommended), then the missing subscribers likely did not complete the confirmation step. 

I hope this helps get you on the right track to solve why this isn’t working from you. Thank you so much for being part of the Klaviyo Community!