User ID, similar to Google Analytics, is its own ID system.

Launch doesn't seem to support getQueryParam. But data elements have many built-in element types, you can use built-in data elements to grab data.

Yes, just migrate the production environment.

Use Library Loaded (Page Top), don't use Page Bottom. You can test it. Under the network of browser developer tools, see that you open a page and send several requests to Facebook.

Use direct call, which can take parameters

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Although Adobe Target provides a piece of code to prevent splash screens, This code is deployed in hard coded form in front of Adobe Launch embed code ,this code does not seem to work.Official https://luma.enablementadobe.com/content/luma/us/en/women.html  demo, there is also a splash screen, using ...

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It could be created before. Recently, I have been prompted this error: Error fetching client data! Please retry in a few moments ...