Didn’t buy one…i don’t need to buy one to know this is a complete scam and praying on vulnerable/suggestible people during the fuel crisis. How they are even allowed to advertise is beyond me. Most countries have advertising standard agencies but unfortunately the web does not enforce anything. Whether it’s the plug in heaters, 4g dongles, voltmod or any of the similar sham products. Platforms are happy to take the revenue from their adverts with no regard for the victims that believe the outlandish claims and purchase the junk. Ultimately the scum bags that sell these ‘snake oils’ are to blame but the platforms giving oxygen to them by giving them advertising space should have a certain level of culpability too.Please do not buy this!