Welcome to UtaForum! It's nice to see a fellow extra UTAU user :sing:
I've had the 403 issue on random threads before, but I'm not sure what causes that. Try clearing your cache, maybe? That's the only idea I can think of.
let's see if I remember how to make a thread
September 12 was my UTAU (Yuri Tamaki)'s 4th anniversary! I was on hiatus here for the entire duration of the preparations, unfortunately. And there were a lot of preparations... this project started in March.
The first video is a slideshow! It...