Whenever you feel the need to try out something new that is outside the ones accepted and used by a lot of people, DON'T. 

If you're worried about copytrade feature, you should just use binance and bybit. AFAIK, both platforms have their own built-in copytrading feature such that you don't even need an API to copy trade via an external platform.

If you're worried about trading fees, you shouldn't because that's the major way this exchanges make money. If any platforms promises zero trading fees, your red flag sensors should go off. The only way I have managed to stir clear of scams and hacks attempts is that anytime I see anything that is too good to be true. I avoid. You should try it sometimes.