Hi Mathias,
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.
Thank you.

Hi Mathias,

When I try to go to some page it asked me for PIN (attachment) and I can not see the table. So can you please provide me that pin so I will be able to help you.

Hi Mathias,

Can you please take a look now.
This is a small buf on our side that is fixed in upcoming version.
You can find the code in Custom CSS field on wpDataTables settings page.

Also I centered the column header, you can also see that code in Custom CSS field. 

Hi Mathias,

Yes you are right.
Unfortunately global changes is not supported yet. We are working on this feature for upcoming update so from the upcoming version of our plugin it will be fixed. ( fixed, in terms of that addition of the column name on the code, in this example .centered_column_).