It looks like you're referencing something like "Www..kzl.io Code" — but that string has a few oddities (double dot after Www , and the domain kzl.io ).
The website is the official activation and payment portal for KiezelPay , a third-party payment service used by developers to sell apps and watch faces for smartwatches. It is primarily encountered by users of Garmin , Fitbit , and Amazfit devices. What is the kzl.io Code? Www..kzl.io Code