Shamim's Plugins

Please go to Front End PM PRO > Settings > Recipient and uncheck “Can send to group”

Please remove first add_action( ‘fep_display_after_announcement’, array( Fep_Read_Receipt::init(), ‘display_read_receipt’ ), 99 ); line

You can use #fep-notification-bar to add any css to notification bar.
Try adding following code in Front End PM PRO > Settings > Appearance > Custom CSS

#fep-notification-bar {
    position: fixed;
}

You can try https://www.shamimsplugins.com/docs/front-end-pm/shortcode/fep_shortcode_message_to/ shortcode

1. Do your users send message in plain text?
2. you can uncheck “Clean reply quote” in Front End PM PRO > Settings > Emails and see if working

To make urs clickable you can add following code in your theme’s (child theme’s if you are using) functions.php

add_action( 'init', function(){
	add_filter( 'fep_get_the_content', 'make_clickable' );
});

As wordpress support multiple roles for same user, my suggestion you use User Role Editor plugin to create multiple custom roles instead of meta key value pairs and assign them a custom role accordingly.

You can try https://www.shamimsplugins.com/support/topic/make-the-email-and-phone-black-out-in-the-message-content-its-possible/#post-28358

@massimo-manca you can use these css classes to style message thread differently.
Let me know if you have any specific questions.