Hi ChRamseier,
Thank you for your purchase.

Please provide me a temporary WP-admin login for your site where this happens, 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 party. You can write credentials here just check Private Reply so nobody can see them except us.

Also point me to the table ID so I can take a look.

Best regards.

Hi Christoph,

Can you please check now.

I entered some Hello data you will see it in the table ID 1.

Best regards.

Hi Christoph

The issue was with the libxml version that you are using. Most of the hosting companies does not update this and they are using the libxml version that are 10 years old. I assume that your version is less then 2.7.8

I made this change:

In file  wp-content/plugins/wpdatatables/source/class.wdttools.php and around line 710 I found this code 

if (self::isHtml($string)) {
$string = self::stripJsAttributes($string);
}

and commented it so the code look like this 

//if (self::isHtml($string)) {
//$string = self::stripJsAttributes($string);
//}

It should work now for your version of libxml.

Best regards.

HI Christoph,

No problem , you are welcome.

If you like our plugin and support we'd greatly appreciate it if you could take a minute and leave a review on CodeCanyon on this link. It means a lot to us. Thanks.