- Go to WPML > Languages > Language URL format
- Make sure the "Validate" option is enabled for the secondary domains.
- Enable the "Auto sign-in and sign-out users from all domains" option
- Save it
- Now go to Permalinks and save the Permalinks settings.
- Logout from the primary domain
- Now login from both domains, you can log in from secondary domains using /wp-login.php at the end of the second domain. And example login path will be:
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To make sure you are correctly logged in from both domains you can check if the WP top admin bar is available from both languages.
- Once you are logged in from both domains, check if you can edit the page in Elementor from the secondary languages.