Once you are admitted to the University, you will receive an email containing your ACU ID Number. Here is an example of such an email sent from info@admissions.acu.edu and titled "Ready to be a Wildcat? Complete your housing registration." This example is the kind sent to undergraduate students who will live on campus, but regardless of what kind of student you are, you will receive an email with your ACU ID Number.
Navigate to https://www6.acu.edu/newaccount/
Enter your ACU ID Number (e.g. 000123456) and your date of birth. This form checks against your student record, so if it indicates the information is wrong, and you definitely typed the ID number correctly, then that indicates your date of birth may be wrong on your student record. Contact Student Services at 325-674-2300 (or your adviser if you are an ACU Online student), and tell them you think your date of birth might be wrong on your student record. Then wait 24 hours and try this form again.
Enter a password to use for your ACU account, then enter it again to confirm it.
The first time you log in after setting your password, you will be prompted to set up Multi-Factor Authentication and Account Recovery. See our support articles: