Thanks, I've tried that but it says invalid mnemonic. Tried using the password too but made no difference.
Then it's possible that one (or more) of the words is "incorrect"... have a look through that BIP39 wordlist for "similar" words that may have been written down/typed out incorrectly... things like kid, kit, kite etc... I think so but if not I can make one quickly
Then you can import the two "BIP32 Root Key" (the one with xc2 in BIP39 Passphrase and the one without) in Ethereum (I'm not sure bitcoin-core has implemented BIP32 yet) and use your funds if it works
I'm sure you meant "Electrum" 
And Bitcoin Core does use BIP32 to generate keys in the HD wallets, and with the advent of "descriptors", you can import xpubs and xprvs... using the importdescriptors command, refer: https://github.com/bitcoin/bitcoin/blob/master/doc/descriptors.md#bip32-derived-keys-and-chains
So many common letters, that should be forbidden!
Good to know bitcoin-core can import BIP32 HD wallets!