This is extremely disappointing. Like, coming from someone who has love the everloving shit out of Synthesizer V since it was announced and has been excited for SVR2 through everything, this is just a bad announcement. Like not even getting into how bad the web editor is, the way it was hyped up made it seem like actual SVR2 news, and it just reminds me again that Kanru desperately needs someone to do his marketing for him so he doesn't set himself up.
Anyway, the editor, oh boy...
It's bad. Like, it's primarily meant for testing SVR2 stuff by the public from what I can tell, but even then it's godawful. Doesn't seem to import files properly, can't export them at all, or render JA-F2's voice! Which basically means that while you can use JA-F2 in the web editor, there's no way to actually use her vocals for anything. I'm really disappointed by it.
EDIT: I have found a way to record the output through Audacity. Not ideal, but it is what it is.