When configuring your Ultimatum campaigns, you can set the countdown timer design to display as a widget.
In order to have a better understanding on how to display a widget countdown timer on your website, have a look over the following video:
First, from your Thrive Ultimatum dashboard, select the desired campaign, and add the widget design type, as explained in How to edit your Ultimatum design with our editor.
Second, add your new design to the campaign's timeline. More details are available here:
Finally, the last and most important step, on your WordPress dashboard, go to Appearance >> Widgets and add the Thrive Ultimatum widget to the widget area where you want the countdown timer to appear:
Considering your Ultimatum countdown timer settings, make sure you drag it in the appropriate active widget area, so the campaign's display settings match your preferred widget areas.