Bip39 Online. Because of the cryptographic design of BIP-39, a weak passphrase won't lessen the security of the opposite wallets or assistance expose the seed words. Of course, BIP39 passphrases are case-sensitive. You should definitely enter your passphrase specifically while you established it up, like any uppercase or lowercase letters. https://reallivesocial.com/story5043988/bip39-wallet-https-linktr-ee-bip39-getting-my-bip39-wallets-to-work