Add following code in your theme’s (child theme’s if you are using) functions.php
add_filter( 'fep_current_user_can', function( $can, $cap, $id ){
if( 'access_message' !== $cap || ! $can ) {
return $can;
}
if ( ! count_user_posts( get_current_user_id(), 'jobs' ) ) {
$can = false;
}
return $can;
}, 10, 3);