Shamim's Plugins

You can go to Front End PM PRO > Settings > Emails > Email Piping/POP3 > Enable and set to “None”. It will remove key from subject. But remember it will disable Email Piping/POP3 if you are using any one of those.

You had copied form https://www.shamimsplugins.com/checkout/purchase-history/ right?
We will try to find out if there any issue from our end.

So you want to add a tag/shortcode, when user view that message they will see their own name instead of that tag/shortcode, right?

It will be possible but require custom code. If you need it badly you can contact me through https://www.shamimsplugins.com/hire/

You do not need to purchase another license.
Can you give me access to your website so that i can setup for you? If yes please send admin user details using https://www.shamimsplugins.com/sensitive-information/

Please follow https://www.shamimsplugins.com/docs/advanced-nocaptcha-recaptcha/troubleshoot-2/license-keys-not-activating-2/

Yes possible. Please follow https://www.shamimsplugins.com/support/topic/restrict-which-rolls-show-up-on-front-end-for-announcement/#post-25048

Yes, your code is not returning anything if user do not have manage_options capability. Use like following

add_filter( 'fep_menu_buttons', 'fep_cus_fep_menu_buttons', 99 );

function fep_cus_fep_menu_buttons( $menu )
{
  if( ! current_user_can('manage_options') ){
    unset( $menu['new_announcement'] );
  }
  return $menu;
}