> Incredibly, Vault was discontinued by automatically turning PIN-protected folders into regular unprotected ones!

Oh that's great! I currently use OneDrive because of Personal Vault (and other smaller reasons), because no one else offered something like it. I didn't even know about Vault, but I guess that's for the better because I wouldn't want the folder holding my ID etc. becoming accessible to every single app connected to my Dropbox.

There had to have been a better way to discontinue it. Even making the folder require migration on next access would've been better than silently worsening it.