It doesn't matter where they are based but if the platform is offering a very high return I will consider it a scam, 1.9 to 3% daily is not realistic no bank or even a big corporation will give you that kind of return, this kind of platform will make you believe that they are legit even showing their location in the map where you can trace them or posting their credentials and license.
If you want to invest in a company do it lawfully and do it in your country where you can check the legitimacy of the project not in an online company where there's a big possibility that they will take it down once they receive a huge amount. After all, they know that people cannot trace them and will not go after them, because they are based overseas.