[Resolved] WPML with The newsletter plugins

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I can see the issue on your screenshot. I will need to closely examine your website. Therefore, I will require temporary access (WP-Admin and FTP) to a test site where the problem has been replicated, if possible. This will enable me to provide better assistance and determine if any configurations need to be modified.

Please note that it is important to have a backup for security purposes and to prevent any potential data loss. You can use the UpdraftPlus plugin (https://wordpress.org/plugins/updraftplus/) to fulfill your backup requirements.

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✙ To resolve the issue, I may need your consent to deactivate and reactivate plugins and the theme, as well as make configuration changes on the site if necessary. This emphasizes the significance of having a backup.

While checking the debug info, I see that the WordPress Memory Limit is below the requirements. The minimum requirements are 128M, but we do recommend 256M and the debug information of your site shows it set to 40M. Please check this link for more details
https://wpml.org/home/minimum-requirements/.
You can increase it by adding the following code in your wp-config.php file, right before the /* That’s all, stop editing! Happy publishing. */ line:

define( 'WP_MAX_MEMORY_LIMIT', '256M' );
define( 'WP_MEMORY_LIMIT', '128M' );

After adding the code you can confirm that the memory was changed correctly from WPML > Support > WordPress > Memory limit.