More than 10 members here already speak against the website which I believe that is more than enough advice you and your sister would need and stay away before you get burnt,
If you can't find any new project that is genuine enough then look for existing project that are low in price and doing okey, or better yet, invest on btc or eth and have a rest of mind.
Another suggestion,  try binance launchpad for new project to invest on if your sister has the required bnb to participate.