Why are you trying to prove it's not a scam? The rule says it's a scam unless it proves it's a reliable site, has delivered mining equipment, and has a good track record, otherwise the site is a scam.

Note that if you scammed, all you have is a username in Telegram that can be changed easily, there is no commercial registration, website, factory, and other things.

Do not search too much, the site is a scam, no matter how positive you get, there are a lot of negative indicators, there are alternatives and there is no need to take risks.