ZOVO Puzzle

The first post on Blake's blog, Seeking Henna, has certain letters underlined in the order "z o v o e s r o n u o e f w t i e o i e n n". The community on the Seeking Henna Subreddit, r/SeekingHenna, refers to it as "ZOVO", referring to the first four letters. The puzzle is yet to be solved.

Statements by Blake
The first blog post also states "Henna, if you’re reading this… I left puzzles for you just like the ones we used to make. Some of them are here."

Blake has stated on Reddit that "I can't help you solve the "ZOVO" cipher. It's for Henna. She would be able to solve it without my help so by giving any other clues I would defeat the purpose of posting the cipher in the first place. I'm not trying to be malicious. I hope you understand that."