What can i do, Meantime now trying the Sparrow Wallet too
Sparrow doesn't support single private key import, it has to be HD.
and the electrum dont recognize that it dont allow the button submit
Are you sure you're using Electrum from electrum.org?
There should be no "
submit" button there, only "
Next" or "
Sweep" buttons depending if you're in Import or Sweep menu
And uncompressed WIF should be supported by both method.
If you're using a legit Electrum client, the reason why the "
Next" button is grayed-out is the WIF private key has a wrong checksum or invalid character(
s).
Count the number of characters if it's more or less than 51.
Also, check if any of the characters doesn't belong to this BASE58 character list:
learnmeabitcoin.com/technical/keys/base58 (
red characters aren't included)
If there is, that could be a typo when creating the text file.