Django - Form is not saving to Db - python-3.x

Question

I'm using for authentication extended AbstractUser and ModelForm. When I write on HTML page only {{ form }} everything works fine, the form is submitting, but in the following case I've added some stylings, but now nothing works. Please, help me find the reason.
HTML:
<form method='POST'>
{% csrf_token %}
<div class="sign-up-user">
<div class="sign-up-user-container">
<div class="sign-up-user-left">
<label for="">{{form.username.label}}</label>
{{form.username}}<br>
<label for="">{{form.password.label}}</label>
{{form.password}}<br>
<label for="">{{form.branch.label}}</label><br>
{{form.branch}}<br>
<label for="">{{form.license_number.label}}</label>
{{form.license_number}}<br>
<label for="">{{form.fin_number.label}}</label>
{{form.fin_number}}<br>
<label for="">{{form.voen_number.label}}</label>
{{form.voen_number}}<br>
</div>
</div>
<input type="submit" value="Register User" class="sign-up-btn">
</div>
</form>

Answer 1

Include two lines to your HTML to understand whats going wrong:
{{ form.errors }}
{{ form.non_field_errors }}
This will display any errors that are associated with the form. If they dont then in your views do the following:
form = YourForm()
if form.is_valid():
// Do things
else:
print (form.errors)
print(form.non_field_errors)
This will display some other errors that you are missing.