If you take money from someone and use it for trading, I mean arbitrage is nothing more than a way of trading, it is not called staking. It is a loan hidden behind staking. "Loan" is here the mildest possible explanation for your recommendation here.
To be honest, this script, in my opinion, there is only one option. To trick people offering him some profit on investment.
Ok :| what you just said sound something like... I give you tomatoes and you say OHh no this is apple
As you said, your opinion.
Your explanation smells like a rotten apple!
The inherent nature of this business is fraud. You are taking deposits in the name of ETH staking (which doesn't exist in reality as of now) and you are using the same money for trading and sharing the profit among your investors.
Examplens is absolutely right in his statement! I can build a similar website in Wordpress under an hour but promising a non existent reward is a scam attempt. We essentially call it Ponzi! Not allowed here!