Lucius how do you know them? Wow!! Thank you very foe this information. I am overwhelmed. At least Extra funds will not lost again. Nice to have you here.
It's an old trick used by scammers, but you obviously missed the Reddit link (hyperlink) posted by @sheenshane, which I also quoted in my post. There you can read other people's experiences that only confirm what we are writing about here.
It all boils down to the fact that we simply have to use non-custodial wallets and those that already have a solid reputation. Of course, for such large amounts, a proven hardware wallet is the least we can do to reduce all the risks that arise from investing in cryptocurrencies.