You can't guarantee if the price of kucoin by the time it was unlock and the time you deposit will be the same. If the price of kucoin dump 100% after the lock up period then the 20% to 50% interest is not sufficient to cover the loss unless kucoin is a stable coin then it will be fine.
Exactly. I don't really like the idea of locking volatile cryptocurrencies or tokens long-term unless maybe it's a solid project.
Such mouth watering annual return is probably not a guaranteed or no? Stuff like this is better on solid stablecoins or even Bitcoin.
People should probably understand the exchange Terms & conditions before locking up their funds.