Bip39 Seed Phrase. Even though there are BIP39 wordlists in languages other than English, it is actually strongly not suggested to work with non-English words for wallet backups. It would make restoring the wallet difficult or unachievable. No, there isn't a complex limit towards the length of the passphrase. On https://listbell.com/story8455552/bip39-wallet-https-linktr-ee-bip39-top-latest-five-bip39-generator-urban-news