Hello,

in regards to updating your plugin, the most important first step is to check this option;

In the main plugin settings/'Prevent deleting tables in database'.

Just to ensure that all your tables, settings and charts will remain safe in your WordPress Database, so you can safely update the plugin.

If you activated the purchase code in wpDataTables Settings/Activation, the update should be offered in the Plugins section. 

On some WordPress installations, you need to deactivate the plugin first in order to see the update offered, so please try that.

If that doesn't work, try going through Dashboard/Updates. 

See if you can update the plugin through there, and if that doesn't work either, you can follow the manual update procedures from this Guide :

Updating the plugin to the latest version

Let me know how it goes.

If you already tried all of these methods but it still won't show the updated version, we can try to do this for you remotely via FTP.

Please provide me a temporary WP-admin (administrator) user for your site where this happens, as well as the FTP Credentials, so we could log in and take a look ‘from the inside’ as that’s the most efficient way to see and resolve the issue. 

We do not interfere with any data or anything else except for the plugin (in case that’s a production version of the site), and of course, we do not provide login data to third parties. 

You can write credentials here just check PRIVATE Reply so nobody can see them except us.