My money is stuck in an Electrum multisig wallet. I can confirm that the master public key I entered at the time was correct (it was the one shown after entering the mnemonic directly on the create multisig wallet page), but it still differs from the master public key in my wallet information. I can't sign transactions right now. What should I do???
The BIP32 Root fingerprint as same with my main wallet
FIXED
What is your multisig config?
How many master pubkeys have you defined for the minimum number of signatures required?
e.g.: Is it a 2-of-3 wallet? Although I think you defined 2-of-2, it's not ideal because if you lose one of those keys, you lose the ability to sign transactions in that multisig wallet. I judge this because the default that appears is 2-of-2, the ideal minimum is 2-of-3 (where only 2 co-signers are needed to sign transactions). You should always have redundancy in your setup so that, if one of the co-signers loses their key, the remaining owners who possess the key can still sign.
When creating the multisig wallet, it states that to restore a multisig wallet, you must have the master public key of each co-signer to rebuild the wallet. Test it, try restoring this wallet.
I believe you've resolved the issue, but to prevent any unexpected surprises, please read the documentation on multisig in electrum to better understand how it works:
https://electrum.readthedocs.io/en/latest/multisig.htmlhttps://en.bitcoin.it/wiki/Multi-signature
