This error message is just a warning related to the base URLs required in the campaigns. Each campaign needs these base URLs to set up redirects:
Error URL (for declines)
Usually, when cloning the campaigns together with a site, these fields are empty because we don’t have the URLs from the new cloned site yet. And the campaigns with those fields empty are in pending status.
To support this situation, we have this option in the publishing popup:
When turning it on and publishing, CTRwow will get the published URLs to update to the linked campaigns and activate them.
So there are two cases when you need to use this option:
First time publishing a cloned site with cloned campaigns since they are empty as I explained above.
When you publish to another host/domain, and you need to update those fields with new URLs.