You need to check the following if your web form is not working:

• Unapproved Records - Check if the records are pending for your approval. You can view the list of records pending for your approval from the Approve Leads/Client/Cases feature.
  
• Incorrect Domain Name - Make sure that the domain name that you specified is correct. If the domain name does not match with the URL where the web form is hosted, then the information will not be captured. Alternatively, you can enter [ * ] in the Domain Name field to capture from other / multiple domains.
• Inactive web form - Check if the web form that you are using is active.