My sister wants to invest into this project:
https://www.dxrcointrade.com/ but for me it looks like a scam... can you guys help me get redflags? what you guys think?
look like thats some kind of HYIP(high yield investment program),
i think your sister must stay away from that site buddy, except your sister can accept the risk

If his sister has knowledge about crypto, she will not invest in the new project because, at this time, it is hard to select the right project. It is better to invest in the old project that already listed on many exchanges, and I am sure that she can found more than 3 good projects. No matter what, the risk will be there, whether she invest in the old project or new project but at least if she invests in the old project, she can analyze if the project will have a chance to increase in the future or not.