[1propionyl]

Made it through the first 9 levels with only a little stumbling (as the author has indicated, there are plenty of little hints).

Level 10 has got me quite stuck though! I think I have an idea what needs to be done, but I'm stuck on trial and error with the exact details.

That said, there's something deliberate that I know is a hint and doesn't figure into my thinking... I don't yet know what it means.

Frustrating, but fun :).

[y2bd]

10 was difficult in a different way than the prior puzzles, and honestly was a little chilling once I figured it out. Good luck, I'm sure you can get it!

[nagonago]

Does it involve sending an email?

[y2bd]

rot13 partial spoilers for level 10

vg vaqrrq vaibyirf fraqvat na rznvy, gur fcrpvsvp vzntr vf eryrinag

[1propionyl]

Yeah, that was my sense. It's just...

vg'f abg pyrne jung gur nqqerff vf, be jung gb fraq... (V'z thrffvat whfg "uv" sebz gur HEY...? Be gb qb jvgu gur urk pbybef bs gur qrfnghengrq vzntr..?)

Edit: oh, hah. Got it. I somehow missed trying the right thing. I had gotten very close before, I just needed to add in the other hint.

[nagonago]

Thank you, I suspected that was the case. Still trying to figure out the right address. Not sure if the hidden clue is a red herring.