Shamim's Plugins

Hi Katie
So you want to only allow subscriber role users can send message to admin, others cannot send message, not even to admin, right?

add following code in your theme’s (child theme’s if you are using) functions.php

add_filter( 'fep_main_shortcode_output', function( $out ){
    if ( ! is_user_logged_in() ) {
        $out = 'Your text here';
    }
    return $out;
});

I will remain more 1 week out of internet.

When i am back, i will try.

Thanks.

For email piping you can follow https://www.shamimsplugins.com/docs/front-end-pm-pro/getting-started-2/email-piping/

If you find difficulty to setup you can set POP3.

Please see https://www.shamimsplugins.com/docs/front-end-pm/getting-started/privacy-settings/

Let me know if still unclear.

As you sent me some code, i thought you can write code. Sorry for that.
Theme can override this plugin css so it may also override Appearance settings.

You can use following code

.fep-button{
    background-color: #ffffff !important;
    color: #5033679c !important;
}
.fep-button:hover,.fep-button-active{
    background-color: #5033679c !important;
    color: #ffffff !important;
}

Then clear your cache (browser and website) and test.
Please let me know.

Did you tried using Front End PM PRO > Settings > Appearance?

For any css change better using browser developer tools. You can google or see https://developer.mozilla.org/en-US/docs/Learn/Common_questions/What_are_browser_developer_tools

Message and Announcement works in different way and they are queried also in different way. So currently it is not possible to combine them.