I only recently registered on the site and has to say the signup was effortless. (Apart from the email code that was send to my Spam folder, so it took me a few minutes to realize that, but that was something on my side and not a problem with the site)

I do not know if there are any known problems with Firefox browser compatibility, but the whole screen started to flash when I used the Firefox browser. (What browser do you recommend for the site?)

Other than that it was a flawless experience, so well done on that.