This was my solution:
Thinking about how to solve the problem: forcing customer to register his address in customer registration process, I thought of something that is much easier, just redirect customer to the address register just after customer registration.
The solution was using the actionCustomerAccountAdd hook, in CustomerPersister.php
if ($ok) {
$this->context->updateCustomer($customer);
$this->context->cart->update();
$this->sendConfirmationMail($customer);
Hook::exec('actionCustomerAccountAdd', [
'newCustomer' => $customer,
Tools::redirect('index.php?controller=address') //Redirect after registration
]);
}
Regards