Enter in the form only the users registered

Its possible with jotform solution that the users only can see the form if they type user and password. I mean a form protected with user and password, only for registered customers. Once the customer fills out your username and password will have the ability to see and fill form.

We do not have such feature where user needs to login before they can view/submit form but with a little workaround it is possible to achieve your requirement. 

Please see this threads and workaround that is provided by my colleagues:

https://www.jotform.com/answers/417268 

https://www.jotform.com/answers/852572 

However please note that words, like password and username are not allow, because it is against our terms of use to collect login credentials. So instead of word password you can use "security code " or similar to protect your form.

Let us know if you need further assistance.