Step 1: Adding fields to Register Form

#1 Make sure that you are using Wilcity Child Theme

#2 Put the following code to functions.php of Child Theme

add_filter('wilcity/wiloke-listing-tools/filter/configs/register-login', function($aFields) {
	$aRegisterFields = array_merge($aFields['register'], [
		[
			'type'        => 'wil-input',
			'label'       => 'Input Field',
			'name'        => 'input_key',
			'isRequired'  => 'yes'
		],
		[
			'type'        => 'wil-checkbox',
			'label'       => 'Checkbox Field',
			'name'        => 'checkout_field',
			'trueValue'  => 'yes',
			'falseValue'  => 'no',
			'isRequired'  => 'yes'
		],
		[
			'type'        => 'wil-radio',
			'label'       => 'Radio 1 Field',
			'name'        => 'radio_field',
			'trueValue'  => 'agree_to_term'
		],
		[
			'type'        => 'wil-radio',
			'label'       => 'Radio 2 Field',
			'name'        => 'radio_field',
			'trueValue'  => 'not_agree_to_term'
		],
	]);

	$aFields['register'] = $aRegisterFields;
	return $aFields;
});

After adding this code, your form will look like this

Step 2: Updating Form Data

To update the data, please use this hook

do_action('wilcity/after/created-account', $userID);