Add email confirmation to EDD

edd_email_conf.php

<?php

function pw_edd_add_email_confirmation() {
	?>
	<p>
		<label class="edd-label" for="edd-email-confirm">
			<?php _e('Confirm Your Email Address', 'easy-digital-downloads'); ?>
			<span class="edd-required-indicator">*</span>
		</label>
		<span class="edd-description" id="edd-email-description"><?php esc_html_e( 'Please confirm your email address.', 'easy-digital-downloads' ); ?></span>
		<input class="edd-input required" type="email" name="edd_email_confirm" placeholder="<?php _e('Confirm email address', 'easy-digital-downloads'); ?>" id="edd-emai-confirm" value=""/>
 	</p>
	<?php
}
add_action('edd_purchase_form_after_email', 'pw_edd_add_email_confirmation');

function pw_edd_process_email_confirmation( $user, $valid_data, $data ) {

	if( empty( $data['edd_email_confirm'] ) || ! is_email( $data['edd_email_confirm'] ) ) {
		edd_set_error( 'email_confirmation_required', __( 'Please confirm your email', 'easy-digital-downloads' ) );
	}
	if( trim( strtolower( $data['edd_email_confirm'] ) ) !== trim( strtolower( $data['edd_email'] ) ) ) {
		edd_set_error( 'email_confirmation_required', __( 'Your email addresses do not match', 'easy-digital-downloads' ) );
	}
}
add_action('edd_checkout_user_error_checks', 'pw_edd_process_email_confirmation', 10, 3 );

I'm stuck on this one, with this code in place, the email verify in checkout doesn't progress past the validation, even if the emails match. Any ideas?