Is there a way to disable the multiple cell selection feature? Or maybe all the selection features, even for single cells?

Hello, Claudio,
 
Thank you for your question.
 
Currently, there is no method that would completely disable cell selection.
 
As a workaround we kindly recommend you using the following construction:

webdatarocks.on("cellclick", function () {
  webdatarocks.removeSelection();
});
webdatarocks.on("celldoubleclick", function() {
  webdatarocks.removeSelection();
});

 
The removeSelection() method will remove selection in case of cellclick and celldoubleclick events.
 
Also, to prevent graphical highlighting adjust add the following block to your CSS:

.wdr-sheet-selection-canvas {
  display: none !important;
}

Find out an example by following the link: https://codepen.io/webdatarocks/pen/zYYjdXd
 
We hope it helps.
Please, let us know if you have additional questions.
 
Kind regards,
WebDataRocks Team

A very appreciated workaround, thank you for your support!