As far as i read there is no way to lose money rather you gain some percentage for participating in any of the earn activities, like the bnb vault activity, all that is required is put your bnb in vault and lock it in and you earn daily profit from any crypto that is specified there, i have tried it and the good part is you can redeem your bnb at anytime, it is totally different from staking that requires the stake period to be over before your coins can be released.