how do i add it in elementor?

Hi @renovomotors ,

For your information, this plugin provides a BACKEND solution to manage products, not for frontend display so there is no shortcode to be used. Users must configure the conditions manually.

Here is our doc for your information: https://doc.wpclever.net/woopt/

If you need a frontend solution for countdown clock, please try https://www.ads-software.com/plugins/wpc-countdown-timer/. However, I should mention that the shortcode and shortcode builder are only available in the Premium version of this plugin.

Best regards.