Is OTOIA a scam, or is it legit?

The current site is not accessible. Access has been blocked since December 1st. It seems to be a fraudulent site.

I got scammed almost exactly like the person who commented below. Now I can't even log into the site. I think this is a total scam.

I have been deceived by a broker from the end of July to the end of November and invested a lot of money, but I cannot withdraw the money. It's very difficult, my brothers and sisters. I even borrowed money from my mother and took out a loan to invest. The thought of having to pay back the loan interest is keeping me awake at night, and I don't know how to tell my family. A Japanese woman approached me on a dating app and said she wanted to be friends. I needed a friend because my younger sibling was sick. That woman (broker) said she wanted to contact me on KakaoTalk, so I added her as a friend and started communicating. The broker introduced me to a site called Otoia, where I could earn 30% on my principal. I logged into the site and was told that I also needed to have MetaMask and Bithumb sites to make money. I invested 1 million won in my first trade and earned 300,000 won. Since I earned 300,000 won, I was told to withdraw it. The broker kept demanding that I invest more, saying that the larger the principal, the more money I could make. They said that if I invested 30 million won, I could earn a monthly salary. They also said that their uncle works at a securities company in Japan and that by analyzing trading nodes, the principal can increase by 30% three times a month, and the more the principal increases, the more money can be made, up to 40%, 45%, 50%, 55% of the principal. They said their friends have made a lot of money through investments and are not working now. Another friend sold their house and bought a bigger one through two trades, and they said there is a lot of money on Otoia. They kept urging me to invest more, telling me to sell my house, take out a loan, sell my brother's house, and so on. I wish I had known that the broker was deceiving me. I regret it now. Please help me. It's very difficult.

I am using the trading platform called otoia. Since November, when I tried to withdraw, they refused to allow the withdrawal, stating that I need to pay taxes, I need to deposit a security deposit, and I need to improve my credit score because it has dropped. I don't understand why I need a security deposit and credit score to withdraw my own money.