Quote from: Erix on December 05, 2024, 02:51:32 PM

Thanks! I already tried that but I get the error the 4th and 5th word of the 17 words seed seem to be wrong. I think here they use BIP39 however my seeds seems not to be of that type.

Quote from: Pmalek on December 05, 2024, 10:25:26 AM

If there is a chance it's an old Blockchain.info wallet, take a look at this:

Quote from: LoyceV on July 05, 2021, 09:00:48 PM

Blockchain.info: To recover an old legacy Blockchain.info wallet, read this topic and go here.

Are you certain that you've used to correct URL in your initial try? The link in that reply is specifically for old account recovery phrase.

FYI, Blockchain has two links that accept their users' "recovery phrase".
Namely:

Old Account Recovery Phrase: https://login.blockchain.com/beta/legacy-pages/forgot-password.html
12-word BIP39-compatible HD Recovery Phrase: https://login.blockchain.com/beta/auth/recovery

Quote from: Erix on December 05, 2024, 02:41:04 PM

Now I found a screenshot of a 17 words seed. That's made the same day, later that day.

This would be a great clue to identify the wallet since Blockchain/Electrum's GUI is familiar even in its early versions.
Do this: Make a copy of it, with that copy, edit and cover the actual seed phrase parts leaving the GUI elements.
Make sure to totally black-out every part that shows any word.

Then upload the covered screenshot to talkimg.com and link it in your reply.