Hello Ben

Unfortunately, you cannot change this in any way. That's how the plugin is creating duplicate tables, and it seems your client reached the database's maximum length for a table name.

What you can do, though, is this:

1. Go into your database, and access this table. Then, click on the Operations tab, and change it's name to (for example) wp_wpdatatable_4_2 (or if that name's taken, change it to something else):

Then, click on GO in the bottom right corner of that section:

2. Go to the database table "wp_wpdatatables", find this table in the list, and edit the content field:

Change it from:

SELECT * FROM wp_wpdatatable_4_4_1_1_1_1_1_1_1_1_1_1_1_1_1_1_1_1_1_1_1_1_1_1_1_1

To this:

SELECT * FROM wp_wpdatatable_4_2

And save that.

The duplicated wpDataTable in the plugin will also change the database table it needs, and you'll keep all your settings for this table:

After that, make sure your client is duplicating this table, not the original one.

I hope that helps.