It seems CQRLOG forces to choose unsafe passwords for eQSL. The password field in the settings only allows passwords with a lenght of 8 and only digits and numbers. The field seems to accept special characters like $%_&, but the password (e.g. like %24_dhj8) will not work. There be an error message, when you try to upload your log.
I think, today you should use longer passwords and use special charchters too. Maybe you think nobody will ever hack a trash-site like eQSL and you are probably right with that. But your programm seems to be well made and that does not fit.