The version i used is the latest version, same version as what MrDracula stated above.
Problem Solved~ Conclusion: - Conflicts has a point, the problem with this is that the new version of flux which is the one that MrDracula stated above and the one that i used, had a lot of differences compared to the old version (the theme i used was the old one). The latest flux version requires 2 email addresses in the registration page and theme that i used (old flux version) doesn't show the other email address box for the confirmation.
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@conflicts & @MrDracula: thanks for answering my topic.