Do not use the link provided.
I used the link from the thread to unlock my Samsung s8 (ee). initial payment was £11.92. I then received an email stating that my phone had the highest level of security and that I needed to pay a further 11.92. At this point no code was given or refund offered. I paid the pending amount and about 5-6 hours I got an email.
in the email was a code and a download link with instructions. I was told to download the file and insert the code into the app. I followed instructions and got to a screen like the picture on this thread that said phone unlocked permanently. I was told to restart and bingo it's done. I then put in another SIM card and it said SIM card invalid and screen popped up asking for unlock code.. so obviously the phone unlocked permanently was a gimmick and was programmed to show in the app. I then messaged the people behind the scenes and still have no reply, it's been 2days. will be contacting bank to get my money back . please stay away. you have been warned