Например, до конца акции осталось:
И тут Вы вводите таймер
[wpdevart_countdown text_for_day="Дней" text_for_hour="Часов" text_for_minut="Минут" text_for_second="Секунд" countdown_end_type="time" end_date="" start_time="1548402995" end_time="1000,0,0" action_end_time="hide" content_position="center" top_ditance="10" bottom_distance="10" countdown_type="button" font_color="#000000" button_bg_color="#3DA8CC" circle_size="130" circle_border="5" border_radius="8" font_size="30" countdown_font_famaly="monospace" animation_type=""][/wpdevart_countdown]