Can't sign up. It keeps asking for a "valid number" in the BTCtalk ID field. Anyone else having issues?
I had that same problem you must write your user number not the nickname in the form, go to your user profile and on the link that goes on the page you will see a number, it is that number that asks you
example:
https://bitcointalk.org/index.php?action=profile;u=137745the number: 137745