You can't mine using a bot on telegram. I'm pretty sure it's a ponzi scam so drop that idea of investing 1 btc. That's a lot man, you should just mine yourself.
And just because it did resulted good (I'm guessing they paid you!???) it doesn't mean you are safe and they won't ever scam you.

And where did you find those reviews cause I can't find anything. Well, it's probably aren't credible anyways