Registration problem (fixed now?) - It took about a week before I could register with this forum. The problem was that the process to register would just stop mid way. At first, I could get through the information page, then complete the are you a human game, but then nothing or a server error like 505 (not sure). I tried again about once or twice a day until the problem was that the game never started, instead taking me back to a screen that stated the game had not been played. I waited a couple more days, and finally the registration process worked and I was able to join. I don't know if this was a one time issue or if it's an intermittent problem.
Contact us problem (don't know if this is fixed) - After my first attempt to register, I went to the contact us page, filled out the form to explain the problem, did the are you a human game, and in this case, it indicated that the game had been completed, and my contact us had been submitted, but I never got a response. During the week while I was trying to join, I think submitted one more contact us message, but never got a response for either of the two messages. I don't know if this is a problem or just a forum software (vbulletin?) feature that isn't supported here.
As mentioned I was able to join. This forum got high ratings for music type questions.