Telegram isn't some "random app" it is installed on over 200 million devices.
I know what this guy is doing and I can tell you that it works and I have increased my investment by roughly 6% everyday for nearly two months now.
It is up to you to take that risk as there is with any INVESTMENT, if you can't afford it don't do it, but don't sit here and mock it when you know nothing about it.
You can and you will make money with this, since you're so worried, perhaps invest the minimum amount and see what it does for you.