Hi,
Thank you for the question.

BuddyPres can not handle message form non logged users. You may want to take a look at this plugin
https://buddydev.com/plugins/buddypress-user-contact-form/

It may be able to handle the use case.

Regards
Brajesh

Hi Nitin,
Welcome back.

Adding tab is not difficult but showing the form is not that simple. You can add a tabg with this code(or modify it to point to some other url)

add_filter( 'xprofile_filter_profile_group_tabs', function ( $tabs, $groups, $group_name ) {

	$link  = '#'; // use your link.
	$label = 'My Tab';
	// Add tab to end of tabs array.
	$tabs[] = sprintf(
		'<li><a href="%1$s">%2$s</a></li>',
		esc_url( $link ),
		$label
	);

	return $tabs;
}, 20, 3 );

I will suggest using a page url in the link and put your form their to make ti simple.

Regards
Brajesh

Hi Sandra,
Thank you for the patience.

I have seen the issue. It seems it is not working with the multiselect field on the site. Please allow me to test and push an update by Tuesday.

Regards
Brajesh

Hi Sotiris,
Thank you.

The simplest solution will be using css. If you know the ID of the login page( I am assuming 5 here for example, Please change).

Then, you can add the following css

.page-id-5 .site-header-login-link {
  display:none;
}

Regards
Brajesh

Hi Lisa,
I have checked it.

Are you referring to the green color bar that appears as progress? It is working fine for me in both the comments as well as the Post.

Please recheck after clearing any browser cache.

Regards
Brajesh