Thank you all for your advice, but the problem has not been solved yet. I followed the EPS path and installed it and did everything that was required by the instructions. He successfully saw the tx and transactions were loaded into core in the watch only mode. But electrum does not connect to eps in any way. -snip-
If you want to spend them through that watching-only wallet, you can try this:
In Bitcoin Core, there should be a "
Create Unsigned" option in 'Send' tab to create an 'unsigned RAW transaction'.
Create a transaction with appropriate amount of inputs and fee, then save the "
.psbt" file in a flash drive.
(
your txn will be high in size so don't set the fee rate too high)
Open your 2FA Electrum in an offline machine (
restore it from seed to be able to use it offline).
Load the .psbt file through the menu "
Tools->Load transaction->From file", you should be able to sign it using two keys (
Review the outputs and amounts).
After signing, export it through "
Export->Copy to Clipboard" and find a way to transfer the copied Signed RAW Transaction to your Bitcoin Core.
Lastly, in Bitcoin Core, open the console (
Window->Console),
In the Console, enter the command:
sendrawtransaction "PASTE_THE_SIGNED_RAW_TRANSACTION" to send the transaction to the network.
Note: tested only on single-sig SegWit, haven't tested if the watching-only wallet created for EPS includes the redeem script; depending on the watching-only copy, this method may not work.
