I noticed, that you may add a user with a username shorter than 4 characters in the admin panel. This user however is not able to login due to the form validation in /application/controllers/admin/user.php (Line: 153). When trying to login he/she will just get the message "Something wrong appears...".
I am using ionize 0.9.7
Suggested fix: Remove min_lenght rule in mentioned form validation, or add the same rule for adding users in the admin panel.
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