They offer decompilation services for all types of expert advisors and indicators, and the sale of ex4 and ex5 decompilers. They show a place where a code would go that would supposedly download an update of the decompiler, after the victim makes the payment for cryptocurrencies, the code never arrives, and they never answer the claims, much less return the money.
1) https://www.ex4tomq4.cc/
1) https://www.ex4tomq4.cc/