Update on Pocket Singer: I deleted it. I don't want any part in that company's dealings.
Q: I bought a download version of a Crypton VOCALOID. How do I register downloads?
A: If you bought the download from SONICWIRE or Crypton's site while logged into your account, the product should have been automatically registered. If you bought it from somewhere else (such as Big Fish Audio), unfortunately, it cannot be registered.
Pulling OPE down is a decent way to de-emphasize weird vowel sounds too. e.g. Miku always wants to pronounce "man" as "mun" and there aren't really any better phonemes to substitute, so I just lower OPE and hope it's not too noticeable lol.