hi, I got to the last step for signing the raw transaction, but now get the error message:

Invalid private key (code -5)
The 1st private key starts with 'xprv.....' and I got it from the wallet text file. I tried the 2nd priv key and got the same error code. Its a 2 of 3 multisig wallet. Its a restored wallet with disabled 2fa.
You didn't follow the process correctly. You don't sign with the "xprv"... you need to create two standard wallets using the xrpvs... and get the private keys from those wallets... the private keys should start with either a "K" or an "L"...
Thanks, I made it up-to point 6 "Make a 2 new standard electrum wallets using the 2 xprv keys and find one of the addresses needed to sign your 2FA address in each of them."
Now, there are two wallets with different addresses starting with 1xxxx and no balance or history. Will signing with the key of any address do, or is there a way to figure out which 3xxx address corresponds to which two 1xxx addresses?