Shamim's Plugins

Very sorry for late reply.
Can you deactivate all other plugins and and change theme to default theme then try?

Let me know.

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

add_filter( 'fep_filter_read_receipt', function( $text, $receipt ){
    $text .= sprintf( '<div>Number of Readers: %d</div>', count( $receipt ) );
    return $text;
}, 10, 2);

It will enable for both.

I misread your previous question. Sorry for that. Yes, currently sender do not receive email. Please add following code in your theme’s (child theme’s if you are using) functions.php to enable that.

add_filter( 'fep_filter_email_to_sender', '__return_true' );

Which code you are using to show read receipt only to admins?

Did you use any custom code for this plugin in your website? Can you change language to English just to test if that showing correctly?

Hi Luke, both options are possible.
Please see
1. https://www.shamimsplugins.com/support/topic/restrict-which-rolls-show-up-on-front-end-for-announcement/#post-25048
2. https://www.shamimsplugins.com/support/topic/create-announcements/#post-26559

You need to pass to with that shortcode. Contact that plugin author how can we get dokan buyer user id inside that hook. You can pass that with this shortcode.