There has been a massive uptick in registrations that are obviously spambots. I am now rejecting various kinds of throwaway email accounts and username combinations. If your legitimate registration attempt is rejected, join the Discord or Matrix and @ me with the details of the account, or send me a message on one of my socials.
They're both from around ~1:05:00.
There's also the 6+ hour one that unfortunately got cut off because of youtube handling of 6 hour livestreams on the backend.