How to make this information invisible in the table "Infinity"

Hello, Jean Pierre,
 
Thank you for your question. 
 
The "Infinity" label can be customized with number formatting.
This can be achieved by setting infinityValue: "" and divideByZeroValue: "", for example: 

var pivot = new Flexmonster({
   ...
   report: {

      dataSource: {...}, 

      formats: [ 
        { 
            name: "", 
            infinityValue: "", 
            divideByZeroValue: ""
        } 
      ], 

      slice: {...}
   }
}); 

For more details please see our number formatting tutorial.
 
Please let us know if this helps.
Looking forward to your reply.
 
Kind regards, 
Vera