I had multiple windows open to that page. Every single page I got to actually render the verification image was only letter's and no numbers.

The letter "O" did look like either a "Q" or a "Zero" in one window. I typed in the letters with cap locks on, and it went through fine. I don't think it is case sensitive, you just need the four or five letters.

Don't make me have'ta Troll ya Bro!