I purchased an InfiRay P2 and it started failing the day after I purchased it. Had to return it. I suspect the seller just resold the defective unit over and over. Nice device if you can find a working one.
Was that from eBay/AliExpress etc or a proper retailer? If it was a retailer with a relationship to the manufacturer that indicates poor quality control on production stock. (E.g. I would hope these guys are okay: https://www.pergear.com/products/infiray-p2-pro )