I'm sure this isn't person mistake, since the recovery phrase was present in two distinctive spots: backed up within a file on S3, and printed with a piece of paper. This text clarifies BIP39, the standard that defines how seed phrases are made, and summarizes how BIP32 and BIP44 standards https://bookmarklinkz.com/story18793843/the-greatest-guide-to-seed-phrase-bip39