Part of html with thymeleaf not displayed - html

Question

I'm trying to create a registration form. But when I try to run my code, part of it doesn't appear on the screen. I use thymeleaf for work with Spring MVC controllers. I looked Thymeleaf tutorials, stackoverflow, etc... but have not seen any solution.
Please tell me what I do wrong or where I can read about solution of this problem.
Below I put the snippet of my html code.
P.S. Sorry for my English.
<div class="container" id="container-middle">
<form class="form-horizontal" role="form" id="register-form" method="post" th:action="#{/post-user-info}" th:object="${user}">
<h2 id="form-header">Sign up for BlaBla</h2>
<div class="form-group">
<label for="login" class="col-sm-5 control-label">Login:</label>
<div class="col-sm-4">
<input type="text" id="login" placeholder="Login" class="form-control" th:field="*{login}">
</div>
</div>
<div class="form-group">
<label for="first-name" class="col-sm-5 control-label">First name:</label>
<div class="col-sm-4">
<input type="text" id="first-name" placeholder="First name" class="form-control" th:field="*{firstName}">
</div>
</div>
<div class="form-group">
<label for="last-name" class="col-sm-5 control-label">Last name:</label>
<div class="col-sm-4">
<input type="text" id="last-name" placeholder="Last name" class="form-control" th:field="*{lastName}">
</div>
</div>
<div class="form-group">
<label for="email" class="col-sm-5 control-label">Email:</label>
<div class="col-sm-4">
<input type="email" id="email" placeholder="Email" class="form-control" th:field="*{email}">
</div>
</div>
<div class="form-group">
<label for="password" class="col-sm-5 control-label">Password:</label>
<div class="col-sm-4">
<input type="password" id="password" placeholder="Password" class="form-control" th:field="*{password}">
</div>
</div>
<div class="form-group">
<label for="birthDate" class="col-sm-5 control-label">Date of birth:</label>
<div class="col-sm-4">
<input type="date" id="birthDate" class="form-control" th:field="*{birthDate}">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-5">Gender:</label>
<div class="col-sm-4">
<div class="row">
<div class="col-sm-12">
<label class="radio-inline">
<input type="radio" th:field="*{sex}" th:value="${female}">Female
</label>
<label class="radio-inline">
<input type="radio" th:field="*{sex}" th:value="${male}">Male
</label>
</div>
</div>
</div>
</div>
<div class="form-group">
<div class="col-sm-3 col-sm-offset-5">
<button type="submit" class="btn btn-primary">Register</button>
</div>
</div>
</form>
</div>

Answer 1

I didn't pass any model from controller to template, so it couldn't put there any result.

Answer 2

That's it! something like ...
public String goAdd(Model model) {
model.addAttribute(new DtoCustomer());
return "customer/edit";
}