has anyone successfuly recoverd the coins after they went offline?
Even if there's someone, it may not apply to your case.
Because everyone is in different situation due to where "
keychain" (
keystore) their private keys were exported from.
And there can be more than 3 keychains (
IICRC) that aren't backed up by your seed phrase if it's from an older version.
Recovering from the seed backed-up keychain is quite simple if it's in the first "
account_index" but the other non-HD keychains aren't, and it's not certain that your exported private keys are from the correct keychain.
For you to have a chance, you may create a new topic and specify as much information that you know,
excluding the actual private keys and seed phrase (
mnemonic).
Refer to this thread for the proper format:
/index.php?topic=1741772.0For now;
If you have a seed phrase, use "
Detect Existing Accounts" when prompted by Electrum to select a script type, that's the next step after the screenshot in the post above yours.
If you already tried to import those private keys to
Electrum with all three script types (
check the "Info" button in Electrum when importing), chances that it's not the right prvKey is high.
Screenshot of "
New/Restore->(Create)->Import Bitcoin address or private keys->Info":

If these didn't work and you think that there's more to it that you haven't explained yet, please open a new topic that's specific to your case.