Hello Bill

I can't see that code activated on any website, so you should be able to activate it.

Because Envato's API is limited to linking 3 requests per second you will probably need to click on "Activate with Envato" a few times until the license is activated, but once it is activated, it will stay active and you will be able to update the plugin through the Plugins page.

Can you please try now, and let me know if it works? Just remember that you probably will need to click on "Activate with Envato" a few times before it actually activates the license.

If, in the future, you don't see the update offered in the Plugins section you will need to go to wp-content/plugins/wpdatatables/controllers/wdt_functions.php and delete this line:

set_site_transient('update_plugins', null);

From line 861.

Then delete cache from your website and browser, and you should have no issues.

You're welcome, Bill

Glad I could be of service.

If you have any further questions or issues, please feel free to open a new ticket, and we'll gladly help.