Bip39 Checksum. Due to the cryptographic style of BIP-39, a weak passphrase won't lessen the security of the other wallets or support reveal the seed words. Certainly, BIP39 passphrases are situation-sensitive. Make sure to enter your passphrase particularly when you established it up, which include any uppercase or lowercase letters. https://bookmarklethq.com/story19506886/bip39-mnemonic-https-linktr-ee-bip39-5-simple-statements-about-bip39-mnemonic-explained