This wont effect your Launchbox license in any way, you have no worries there. It is a very strange issue though, i dont recall users ever having issues registering to the site. I would say there is a 99.9% chance that you were not purposely blocked from registering, you may of just hit a bug in the registration process somehow. Jason is the only one who can actually do anything there as moderators dont have that sort of access to the site, where we could look up visitors to the site or email addresses as thats obviously private information. Jason is US based and its night time/very early in the morning there at the moment, im sure he will get you all squared away once he is in the office today.
Thanks for bearing with us for the time being.