Additional signup validation filter not working with TML

Hello Jeff,

This is not the TML issue, I am just having troubles making additional wpmu_validate_user_signup filter to work with Theme My Login. I am doing this through a separate plugin and I was hoping you might prompt me what can be wrong here.

In my custom plugin, I added filter with highest priority as:

add_filter('wpmu_validate_user_signup', 'check_contact', 1, 3)

If validation fails, a new error is added to the $result[‘errors’] array like:

$result['errors']->add('no_contact', 'Sorry you cannot be registered');

I also added error message to the ms-signup-user-form.php

<?php if ( $errmsg = $errors->get_error_message( 'no_contact' ) ) { ?>
		<?php echo $errmsg; ?>
	<?php } ?>

I assumed that since my validation filter runs first, TML will receive the $result[‘errors’] with my custom error assigned (if any) and will block the registration. However, my filter never works.

Would you have any idea why TML not picking up additional validation? Thanks!

https://www.ads-software.com/plugins/theme-my-login/