solved it. the other 4 were decoy's i think.
Like this one is from the png number 2, 9, 15 and 20:
Which translate to "This is not the password :p"
and so the password was formed from 4, 7, 16 and 17
It says: Password: e4$t3Rz.
Yaaaay /no1/no1 twas fun /ok