Hi, Paolo.

If you do not see the tables in the wpDataTables table list, in the back-end;

you most probably have MySQL version 5.6.x installed on the hosting server.

Our developers discovered that the support for MySQL version 5.6 has stopped/ 

it no longer supports specific JSON functions that our plugin uses to load this 'browse tables' list properly. ( Reference about that here)

The best solution will be to change the MySQL version on the server, either to the older 5.5 ,

or any newer version, such as MySQL 5.7 or 8.0, or higher.

(If you don't know how to do that, please check with your hosting support if they can change the MySQL version on the server).

2. Or, if it is not currently possible for you to change the MySQL version on the hosting server,

our developers made this fix that you can use, with an edited code of our plugin.

I am sending you this edited PHP file as attachment,  

please upload it to your FTP and overwrite the file in this path:

wp-content/plugins/wpdatatables/source/class.wdtbrowsetable.php

That should fix the issue of tables not loading on the list in the back-end.

Let me know if it helps.

Hi, Paolo.

Sorry, i forgot to send you that file as attachment, here it is.

So, i recommend the best solution will be if you can change the MySQL version installed on the hosting WordPress server, from 5.6x  to older 5,5  or any newer ones like 5.7 , 8.0 and newer;

but if you're not able to do that,

then you can upload this PHP file to your FTP and overwrite the file in this path:

wp-content/plugins/wpdatatables/source/class.wdtbrowsetable.php

That should fix the issue of tables not loading on the list in the back-end.

Let us know how it goes. Thanks.