Potential contact?

Could rppii/KT potentially have the song? They worked a lot with MASA in his early era, and they are listed as the creator of the MV for Abnormal Love Enthusiast, which was also lost for a time. They did the art for Crystal Diva 1, too, which is another lost MASA song, so I don't think it's out of the realm of possibility they could have Interface and other lost MASA songs. They also posted a video to their niconico, which is now taken down, that had a crossfade of Medical Wedding, which is another lost MASA song. The only issue is that I cannot find a single account for them that is still operating. I've linked three Twitter accounts to them, but they're all taken down. Someone in the LMW Discord thread for Interface suggested that they could be changing usernames or accounts, which would explain why all the confirmed ones are inactive. The last post I can find from them is in late 2021 on a Pixiv account, so they seem pretty inactive. Is there any way we could potentially get to contact them, or is this another dead lead because of the inactivity? I'll post the link to their Vocaloid Database page here, since it has links to the socials that are confirmed to be rppii. https://vocadb.net/Ar/11640