Bless has started to check for witches. The IP requirements for idle mining are strict. Don't choose cheap IPs just to save a little money; it's unnecessary to end up with nothing after participating for so long!

To summarize what the officials said:

Non-residential IPs are most likely witches!

Locking assets can get you high multiples of airdrop rewards, but I personally do not recommend it.

Check wallet interactions.

Emails with private domain names are relatively risky.