You need to update the recaptcha on the registration page as it is probably preventing a lot of new registrations.

Version 1 of the software has been shutdown and is not working anymore.

I had to search how to overcome this, you need to type "v1" into the text box, but most people will not be bothered that much to search a work around.

I can't find the thread now but that was the only way I could get on.