I think my dad is being scammed

My dad just started telling me about he started crypto on a website through a woman that got his number by accident. I’m not sure if I’m allowed to write down any websites, but I asked a friend and the website address is the same, except it’s .la instead of.com. When I told my dad it sounds like a scam, he got angry. He already put 1000 euro’s in this website and told he has 500 euro profit. And he started two weeks ago. I’m scared he will lose a lot of money and he will not listen to me. What should I do?