password access form

Thank you for contacting us. 

It is against our Terms of use to create forms that are used for collecting login credentials, such as password and username.

Phishing. You agree that Company may terminate your JotForm Service immediately if a form's purpose is found to be deceptively obtaining: sensitive credit card information, social security numbers, user login credentials, or other sensitive personal information. All these activities are considered as Phishing and any account along with the violating forms will be suspended immediately.

However if you want to add password protection to your form, you can check this thread where my colleague provided step by step explanation how can this be done. 

Hope this will help. Let us know if you need further assistance.