Aliasing oppaioppaioppai → okioppai
Link to alias

Reason:

This is the artist's more widely-used name. It's on his Patreon, his DA, and mentioned on his FA account as his "real name".

More Info:

Here are all the accounts he uses the name "okioppai"
https://www.patreon.com/okioppai
https://okioppai.deviantart.com/
https://www.hentai-foundry.com/user/OkiOppai/profile

Mentioned as "full name" on his FA (which is the only account that uses the "oppaioppaioppai" name):
http://www.furaffinity.net/user/oppaioppaioppai