Hi, I've installed an extension called LiveTable on a Qlik Server, which allow me to use the writeback.
It has two components:
The client-side Javascript based LiveTable extension
A server-side Python based REST API to query the database(s)
If I call the service using an external machine and connect to the qlik server using the browser it doesn't work but the PC sees the service. If I use the extension from server and i put the localhost with the port it works well. I tried to use Qlik Desktop too from my personal PC and It works using the server IP and the port of the service