I wanted to ask what character can be substituted for *.
It doesn't matter but if you hold your mouse over the textbox you will see a popup showing what characters are accepted. This character will only be used to indicate the missing position and nothing else.
i want to try matching only uppercase and lowercase letters. is there such a possibility?
Unfortunately no.
And another question I have a privatkey in it, 9 characters are lost at the beginning. After the number 5. I tried to shorten the search options. and tried to substitute other symbols for example 5KoR ******* and the search did not give any result at all. there are suspicions that not all symbols can be in places 3 and 4.
The problem could be in existing characters but as far as the start goes the uncompressed keys start with 5H, 5J or 5K but the rest can be anything.