Probably you're in a country not eligible for giveaways?
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.
it happen for all the giveaways
Make sure you are not using adblocker (or something like noscript) that hide the recaptcha or block certain cookies. In other words; do you see a captcha window when you try to request a code?
There was a problem... please check this thread