If you initially purchased your student’s course on the web, you were given an option of simultaneously creating a parent account and automatically linking it to your student’s account. If you did this, you can log into your parent account on the web here.
Once you’ve created your account, click on "Link A Student". Please note that your student must have an account created with Aceable already for this to work.
Note: The only time you may create a parent account is during the purchase flow.
I have a parent account, but I need to link a second student. No worries! Simply log into your parent account. From the main page, you'll see the option to link more students. Check out the screenshot below: 
