Unfortunately, I have to confirm what Yaiza wrote, the service does not work at all: unlike him I have no terms of comparison since -though I bought it some time ago- I have had the opportunity to use it only now. I must confirm that although I followed the instructions for installing the script in the header section the service does not generate any data. Very disappointing! I then contacted via chat the customer service department, which to date has not responded to me. I hope this is not what it seems...