As of now, CopeCart made it possible to set a checkout page timer for your customers. It is a widget timer designed to help you increase your sales with a countdown element during checkout.
By default, the timer option is disabled. To enable it, go to the Edit Product page, scroll down to the Checkout Page Timer section, and switch the toggle button:
Next, set a time for the countdown timer (minutes:seconds) and save your changes:
That's it. From now on, every time when a customer purchases this product, they see the countdown timer at the checkout page.
Please note that if you'd like to use the countdown widget, you should manually enable timer for every product.