i think you just got scammed from the clone because if someone talks to you with the admin title first usually it's a scam
because IMO there is always notice for every project that Admin will never PM you first
Even it's from a clone or real telegram channel of that website, telling you to send a decent amount of Ethereum and expect a huge return is already a red flag. This is the weakness of some newbies, they are thinking that's a way of earning crypto.
But these scammers are taking advantage of them, their innocence but this is a huge mistake and expensive lesson for him, let's hope that others will also learn from this and stops getting greedy with those unreal terms.