Airdrop has been restricted. Stop speculating.
Currently, the official restricted accounts are random, even if you are very compliant, there is still a very small chance of being restricted. However, accounts that will definitely be restricted, aside from internal transfers, are those that have not certified their face multiple times. (Knowing some of Binance's rules and still insisting on going against them is also 100% restricted).
Being restricted for limit order brushing and trading competitions is also random. If you brush a little slower, the chance of being restricted naturally decreases. As for those IP issues, as long as there are dozens of machines under the same IP that are not related besides the IP, you won't be restricted just because you have dozens of machines under the same IP. Most of those who are restricted are because one or two, or even a few, do have issues, and then they are linked to other machines, resulting in multiple accounts being restricted. The notion of one machine one card without using Wi-Fi is just to minimize some risks, but you will still be restricted randomly. Currently, there are only two methods to lift the restriction: one is natural unblocking by the official, which requires waiting for various times. The second is to lift the restriction through certain means. (You can consult me for this).
Regarding the face recognition issue, in fact, many people have conducted a lot of experiments. Some accounts really do not perform face recognition well, while some are crazy about it. I boldly speculate that at certain times, the security weight of the account is often evaluated by the system. When there are no significant fluctuations, the system will not restart the evaluation of permissions. For example, if you have over 10,000 USDT in your account, and you withdraw that 10,000 USDT and transfer it elsewhere or frequently buy small amounts, during this period, if you often operate face recognition quickly, the system will generally consider this account very safe during this time. The frequency of face recognition requirements will decrease, and as long as the account does not engage in any outrageous operations during this period, the probability of being restricted when trying to claim an airdrop will be extremely low.