I've seen some people saying they are having issues with the CAPTCHA so I went through and logged in/out with three of my test accounts. The results are as follows: Maybe I can offer a few tips. I always use all caps despite it not being case sensitive. Try not to sit at the login page for too long. If it has been over ~5 minutes, refresh the page for a new CAPTCHA. There are no numbers only letters so some may be confusing a "O" for a "0". K and X can be tricky and are used quite often in my experience. Take time to notice the subtle difference.