Hi, Faris

Thank you for showing interest in our plugin.

1. Conditional formatting works for all table types besides "simple tables". You can see more details about that here - https://wpdatatables.com/documentation/table-features/conditional-formatting/

2. Tables that can be made front-end editable are, for example, Manual tables, SQL-type based, simple tables,etc.  More on these Documentation Links - General Table Creation Overview;  Front - End Overview

- If you link/synchronize an Excel file, Google Spreadsheet, and others; these can't be Front-End editable, but they will remain synchronized, so any change you make on the source, will immediately update with the front end, as you refresh the page; 

More about this on Documentation :  Editable tables from imported files; Creating Tables in WordPress from Excel;    Creating table linked to Google spreadsheet .

- If I understood correctly, the question about quick save :

If you enable in-line editing, you can quickly edit any value in a field, and it will quickly be saved, as soon as you click outside the field; if that makes sense.  Also, there is an additional feature, if you enable Excel Like - editor; you can quickly edit fields that way, as well. 

3. If you import a file during Table Creation, such as Excel, or Google Spreadsheet, you can choose which columns you need; and after import, the table gets created in the database; and it behaves as a Manual Table.

More about that here - Creating a table by importing data from Excel, CSV or Google Spreadsheets.

4. You will absolutely get full support from us when you purchase the product.

- If you need more information, please contact us further, or if anything was unclear. Thanks.