waterlogged tank" fooled the last three guys too probably

Honestly $80 for one lucky hit sounds like a fluke, not a tool. Point that thing at a board and you'll get hotspots everywhere, half of them totally normal, and next thing you know you're swapping parts that were fine. Real board level work needs a scope and schematics, not a phone toy.

Why did you even order from a random site though? That's the first red flag right there. If the price looks too good and the site has no reviews, it's almost always a fake. I got burned once on a Nendoroid that way and the face was straight up melting off. Stick to sites with real seller ratings or just buy from the official store next time.