This thread is resolved. Here is a description of the problem and solution.
Problem:
The client was seeing the "WPML detected a new address for this site" issue again on WPML >> Translation Management page which points to some unknown IP address.
Solution:
Please take a backup of the site first and then select the "NO" - the second option and it solved the issue.
Relevant Documentation:
https://wpml.org/documentation/translating-your-contents/advanced-translation-editor/using-advanced-translation-editor-when-you-move-or-use-a-copy-of-your-site/
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