There can be different reasons for the Teads Click ID not to be forwarded.
Below you can find the main reasons which could be causing this issue.
Please check:
The Teads Click ID is well implemented, following the guide in How to forward the Teads Click ID? article.
If there’s a 2-step redirection existing after clicking the creative (e.g. adserver A → adserver B → Landing Page, resulting in the &auctid erasing).
If there’s any automatic refresh on the landing page or after accepting cookies on the CMP, wiping the URL parameters.
If the CMP is not blocking, allowing the user to visit another page, immediately removing the Click ID.
If the CMP is not correctly set, in some cases, the pixel is not firing on the first page, but only on the second page. In this case, the pixel will only be fired when the user visits the second page, in which the Click ID has been removed.
If the website is using a disclaimer for age verification, it’s possible it’s creating a redirect and removing the Click ID.
If the user must select the country of the website on the landing page, it can also remove Click ID due to a redirection after country/language selection.
If there’s an automatic redirect URL for country redirection. For example URL in creative iswww.website.com/welcome/ but it automatically redirects towww.website.com/en-us/welcome removing the Click ID this redirect.