Overview of the issue
WPML will trigger a notification when you move or copy your site. However, there are situations where it will pop out even if you haven’t migrated/restored your site.
If you’re prompted with a “Site Moved or Copied – Action Required” banner, please select: I moved the site to this new URL. You can find this banner on the WordPress dahsboard, by going to WPML → Translation Management → Automatic Translation, or by going to Plugins → All Plugins.