Hello and welcome to WPML support.
Would you please follow the steps below?
The minimum requirement is 128M but I suggest that you increase it to 512M: https://wpml.org/home/minimum-requirements/
You can add this by adding the code below to "wp-config.php" file of your WordPress installation root folder:
/** Memory Limit */
define('WP_MEMORY_LIMIT', '512M');
define( 'WP_MAX_MEMORY_LIMIT', '512M' );
Please add the code above the line below:
/* That's all, stop editing! Happy blogging. */
After that, please do as follows:
- Make sure that you are logged in wpml.org.
- Go to "WordPress Dashboard > Plugins > Add New > Commercial (Tab)".
- Click the "Unregister WPML" link. (Your translations will be safe)
- Click the "Register WPML" at the right section of the screen.
- Click the "Get a key for this site" link annotated in the screenshot below.
- A new page will open up and the auto-generated key will show in pop-up.
- Copy the key and paste it into the "Site Key" input box annotated in the screenshot below.
- Click the "OK" button.
Screenshot:
hidden link
For more information:
https://wpml.org/faq/install-wpml/#register
See if it fixes the issue, if not, I'd appreciate it if you could give me the URL/User/Pass of your WordPress dashboard after you make sure that you have a backup of your website.
It is absolutely important that you give us a guarantee that you have a backup so if something happens you will have a point of restore.
Make sure you set the next reply as private.
Thanks.