Hi timjo,
Thank you for your purchase.

Sorry for late response. 

We are located in Serbia and our working time is from 10:00 to 17:00 CET. business days.

Every table have generated unique ID that you can use for styling.

Just add this code in Custom wpDataTables CSS under the "Custom JS AND CSS" in main settings of wpdatatables.

#wdt-table-title-50 {
    font-size: 22px !important;
}

Hi timjo,

You are welcome.

If you have any other issue or question please open new ticket, and we help you out.

I’d like to ask you a favor. Would you mind taking a few minutes to write a review for us, please on this link? 

Our free version is the only place where we can have proof for our hard work; your comments are beneficial for others to know what to expect when they’re looking for our plugin.

Thank you in advance. It means a lot to us, and I am looking forward to reading your comment.

Best regards.