Hi, Andrew.

Thank you for reaching out to us.

Seems like we found a little bit of custom CSS solution for you; if I understood correctly what you need to achieve - making the table width spread through its entire container while in desktop size of the screen.

- Can you please try to add this custom CSS onto the table, in the Customize Tab?

.wpDataTablesWrapper .wdtscroll table.wpDataTableID-14.scroll {
    width: 100% !important;
}

- Let's see if that helps

Hello again, Andrew.

- We are happy to see that the first CSS worked as intended on your table.

Let's try this one for the simple table.

table#wpdtSimpleTable-17 {
    width: 100% !important;
}

Check out how it looks, and contact us further, to make sure it is what you needed, please.

Hi, Andrew.

That's right, sorry about that, I didn't show you where to input this CSS ;

because there is no customize tab on the table setting, as you can see, we will add this to the custom CSS of the main settings in the wpDataTables plugin, like on this screenshot:

Let's see if that does the trick.