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

• Use of HTTP - If you are using HTTP in your web form HTML codes, you need to change it to HTTPS. See Also Only HTTPS Support in Web Forms
• Removing default hidden fields - When the HTML code is generated for the web form, by default, there are certain system generated hidden fields in the HTML code. If you remove these Zoho defined hidden fields, the web form will not work. Here is the code snippet that should not be removed from your web form code.
  <input type='text' style='display:none;' name='xnQsjsdp' value=sample value />
  <input type='text' style='display:none;' name='xmIwtLD' value=sample value />
  <input type='text' style='display:none;' name='actionType' alue=sample value />
• Changes in the script - The third-party site on which you embed the Zoho CRM web form, may convert some special characters provided in the web form
• 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/Contacts/Cases feature. See Also Approve Leads
• Permission to View Records - The records will be visible to you, only if you have permission to see those records. For instance, the leads generated through web forms are assigned to user A. You will not be able to view those leads if you do not have the access to view the user A's records.
• 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.