I don't like signal groups, which looks like what your cousin does, because I have no idea if the trade setups and the trades are actually done by the people recommending them, it's easy to say 10 predictions and then only show the ones that actually happen... Seen it many many times.

On WooX I know the guy I'm copying is doing the trades, I can see his positions, I can see the position size, and he only gets part of my profit (profit sharing), if he actually makes me money, if he loses and then wins, only after regaining everything he lost back will my profit be shared with him. The entry points normally have a little difference from his entry point, because of liquidity, but seems to not be that bad...