HI cianmaher,
Thank you for your purchase.

We are located in Serbia and our working time is from 10:00 to 17:00 CET. business days and also support system that we are using was not functional.

1. Every button in editor modal have generated id based on table id. So for  button  "APPLY AND ADD NEW"  you can use css rule: 

button#table_1_apply_edit_dialog{
    display: none !important;
}

if the table have id table_1. You have to check throw Inspect element which id is generated. To hide this buttons you can add this CSS on Custom CSS field on wpDataTables settings page or directly on the page between <style></style> tags.

2. Id of the row is not recommended to change or modify because wpdatatables use it for operation like adding, edit or delete.

3. If your MySQL-query based wpDataTable doesn’t work correctly with server-side processing, probably this is happening because wpDataTables server has problems with parsing of the query and building new queries dynamically (happens rarely, but does sometimes). To avoid this please prepare a MySQL view (a stored query), which will return the data that you need, call it e.g. “view1” and then build a wpDataTabled based on a simple query like “SELECT * FROM view1″.

Hi Cian,

You can take a look on this link how you can disable input field.