It is a SCAM. You purchase an iCloud Unlock, but what you get is a 'guide' with exactly the same information you can find on the Apple Support website. They will ask you for more money to unlock your device, and I honestly doubt that they can unlock a device.
I don't care about the $30 I just lost, but my legal team just started legal actions to shut down this company. It infringes almost every advertising law in Europe and the UE. I will create a group for all the please affected, so we all can get our money back.