I solved it by thinking. I tried changed my password to a usual one which is 17 characters long but its maxium was 15. I thought it reset it to default but it deducts characters from the previous password. (set the password as aaaaaaaaaaaaaaaa). It will remove 1 letter and it will set that to your password without warning as the max is 15 characters and the password was 16 letters.
Do realize I thought it never changed the password as it didn't accept the length so I thought it would be the default password.