Convertize supports cross-domain tracking, but third party cookies have to be enabled. Therefore, tracking will not be 100% accurate because some of your website’s visitors do not enable third party cookies and are not tracked.
Furthermore, the pixel code has installed on each of the domains has to be identical. To install the Pixel on a cross-domain platform, the process is identical to its implementation on the main domain platform.
Track a goal on a cross-domain website
To track a goal on another domain when after creating your scenario, you have to select “Options”.
Then, in the “Goals” tab, enter the name of your goal and the URL address of the cross-domain if the goal is located on this page.