In order to change format of total value, you'll need to modify plugin’s code.
Please locate line 544 in cc.main.js in plugin’s folder. It should have the following code:
total = total.toFixed( decimals );
Replace the noted line with the following statement:
total = Math.round(total); total = total.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ".");
Make sure to clear cache after making the changes.