500% profits merging on USDT staking is quite huge and breed suspension in the legitness of the offer you got and what the exchange it, some of those staking platforms promise high API payment but all are attempts to deceive investors into making deposits and boom their money is gone, so if you don't mind can you please share the name of the said exchange for us have an insight of what you are saying, but what I can advice right now is that you shouldn't be carried away with the percentage offers since %500 return is quite tempting.
Even though it is only for the newbies, no doubt that it is still huge. There might be some sticky terms with this just like the other huge percent bonus that we see, so it is worth digging (the terms and conditions).
Many of them are in fact legit, I mean in a way that we can withdraw on them but it is just that their promotions are deceiving sometimes. Some people can still view this as scammy. Earning passively must not be dependent on the market situation. Whether the market is bear or bull, it should still give us a continuous return if we are with the program already but those who came in early has more advantage than those who came in late but it is also better to be late than later or never.