If you're talking about giveaways, then they just don't have the keys for you.
Unfortunately, a key could not be assigned to you.
Hi, can anyone help me?
1) We've ran out of keys before we could assign one to you while you were in the queue.
2) You are in a country or region that is not eligible to receive a key.
3) A key has already been assigned to you.
4) reCAPTCHA validation failure.