look at forms.py imports
from django.contrib.auth.models import User must import MyUser instead of that
same in
class Meta: model = User fields = ['email', 'password1', 'password2'] and add to MyUser class
objects = MyUserManage() change to
class Meta: model = MyUser fields = ['email', 'password1', 'password2'] and settings.py must set:
AUTH_USER_MODEL = '<apppath>.MyUser'